Dollars
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Dollar is the name of more than 25
currencies A currency is a standardization of money in any form, in use or currency in circulation, circulation as a medium of exchange, for example banknotes and coins. A more general definition is that a currency is a ''system of money'' in common use wi ...
. The
United States dollar The United States dollar (Currency symbol, symbol: Dollar sign, $; ISO 4217, currency code: USD) is the official currency of the United States and International use of the U.S. dollar, several other countries. The Coinage Act of 1792 introdu ...
, named after the international currency known as the
Spanish dollar The Spanish dollar, also known as the piece of eight (, , , or ), is a silver coin of approximately diameter worth eight Spanish reales. It was minted in the Spanish Empire following a monetary reform in 1497 with content fine silver. It w ...
, was established in 1792 and is the first so named that still survives. Others include the
Australian dollar The Australian dollar (currency sign, sign: $; ISO 4217, code: AUD; also abbreviated A$ or sometimes AU$ to distinguish it from other dollar, dollar-denominated currencies; and also referred to as the dollar or Aussie dollar) is the official ...
, Brunei dollar,
Canadian dollar The Canadian dollar (currency symbol, symbol: $; ISO 4217, code: CAD; ) is the currency of Canada. It is abbreviated with the dollar sign $. There is no standard disambiguating form, but the abbreviations Can$, CA$ and C$ are frequently used f ...
,
Eastern Caribbean dollar The Eastern Caribbean dollar (currency symbol, symbol: EC$; ISO 4217, code: XCD) is the currency of all seven full members and one associate member of the Organisation of Eastern Caribbean States (OECS). The successor to the British West Indies d ...
,
Hong Kong dollar The Hong Kong dollar (, sign: HK$; code: HKD) is the official currency of Hong Kong. It is divided into 100 cents. Historically, it was also divided into 1000 mils. The Hong Kong Monetary Authority is the monetary authority of Hong Kong an ...
, Jamaican dollar, Liberian dollar,
Namibian dollar The Namibia dollar (currency symbol, symbol: $ or N$; ISO 4217, code: NAD) has been the currency of Namibia since 1993. It is normally abbreviated with the dollar sign ($), or alternatively N$ to distinguish it from other currencies called “d ...
,
New Taiwan dollar The New Taiwan dollar (code: TWD; symbol: NT$, also abbreviated as NT), or simply the Taiwan dollar, is the official currency of the Republic of China (Taiwan). Usually, the $ sign precedes the amount, but NT$ is used to distinguish from othe ...
,
New Zealand dollar The New Zealand dollar (; currency sign, sign: $; ISO 4217, code: NZD) is the official currency and legal tender of New Zealand, the Cook Islands, Niue, the Ross Dependency, Tokelau, and a British territory, the Pitcairn Islands. Within New Zeal ...
,
Singapore dollar The Singapore dollar (currency sign, sign: S$; ISO 4217, code: SGD) is the official currency of the Singapore, Republic of Singapore. It is divided into 100 cent (currency), cents (, , ). It is normally abbreviated with the dollar sign $, or ...
,
Trinidad and Tobago Dollar The Trinidad and Tobago dollar ( currency code TTD) is the currency of Trinidad and Tobago. It is normally abbreviated with the dollar sign $, or alternatively TT$ to distinguish it from other dollar-denominated currencies. It is subdivided int ...
, and several others. The symbol for most of those currencies is the
dollar sign The dollar sign, also known as the peso sign, is a currency symbol consisting of a Letter case, capital crossed with one or two vertical strokes ( or depending on typeface), used to indicate the unit of various currency, currencies around ...
$; the same symbol is used by many countries using
peso The peso is the monetary unit of several Hispanophone, Spanish-speaking countries in Latin America, as well as the Philippines. Originating in the Spanish Empire, the word translates to "weight". In most countries of the Americas, the symbol com ...
currencies. The name "dollar" originates from the "thaler" which was the name of a 29 g
silver coin Silver coins are one of the oldest mass-produced form of coinage. Silver has been used as a coinage metal since the times of the Greeks; their silver drachmas were popular trade coins. The ancient Persians used silver coins between 612–330 B ...
called the
Joachimsthaler A thaler or taler ( ; , previously spelled ) is one of the large silver coins minted in the states and territories of the Holy Roman Empire and the Habsburg monarchy during the Early Modern period. A ''thaler'' size silver coin has a diameter o ...
minted in
Bohemia Bohemia ( ; ; ) is the westernmost and largest historical region of the Czech Republic. In a narrow, geographic sense, it roughly encompasses the territories of present-day Czechia that fall within the Elbe River's drainage basin, but historic ...
, the western part of
Czech Kingdom The Kingdom of Bohemia (), sometimes referenced in English literature as the Czech Kingdom, was a History of the Czech lands in the High Middle Ages, medieval and History of the Czech lands, early modern monarchy in Central Europe. It was the pr ...
(now the
Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...
). The word itself comes from the word ''thal'', German for valley.


Economies that use a "dollar"


Other countries that use the "United States dollar"


Other territories that use a "dollar"


Countries unofficially accepting "dollars"


Countries and regions that have previously used a "dollar" currency

*
Confederate States of America The Confederate States of America (CSA), also known as the Confederate States (C.S.), the Confederacy, or Dixieland, was an List of historical unrecognized states and dependencies, unrecognized breakaway republic in the Southern United State ...
: The Confederate States dollar issued from March 1861 to 1865 *
Ethiopia Ethiopia, officially the Federal Democratic Republic of Ethiopia, is a landlocked country located in the Horn of Africa region of East Africa. It shares borders with Eritrea to the north, Djibouti to the northeast, Somalia to the east, Ken ...
: The name "Ethiopian dollar" was used in the English text on the birr banknotes before the
Derg The Derg or Dergue (, ), officially the Provisional Military Administrative Council (PMAC), was the military junta that ruled Ethiopia, including present-day Eritrea, from 1974 to 1987, when they formally "Civil government, civilianized" the ...
takeover in 1974. *
Malaysia Malaysia is a country in Southeast Asia. Featuring the Tanjung Piai, southernmost point of continental Eurasia, it is a federation, federal constitutional monarchy consisting of States and federal territories of Malaysia, 13 states and thre ...
: the
Malaysian ringgit The Malaysian ringgit (; plural: ringgit; symbol: RM; currency code: MYR; Malay name: ''Ringgit Malaysia''; formerly the Malaysian dollar) is the currency of Malaysia. Issued by the Central Bank of Malaysia, it is divided into 100 cents ( M ...
used to be called the "Malaysian Dollar" in English. The surrounding territories (that is, Malaya, British North Borneo,
Sarawak Sarawak ( , ) is a States and federal territories of Malaysia, state of Malaysia. It is the largest among the 13 states, with an area almost equal to that of Peninsular Malaysia. Sarawak is located in East Malaysia in northwest Borneo, and is ...
,
Brunei Brunei, officially Brunei Darussalam, is a country in Southeast Asia, situated on the northern coast of the island of Borneo. Apart from its coastline on the South China Sea, it is completely surrounded by the Malaysian state of Sarawak, with ...
, and
Singapore Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. The country's territory comprises one main island, 63 satellite islands and islets, and one outlying islet. It is about one degree ...
) used several varieties of dollars (for example,
Straits dollar The Straits dollar was the currency of the Straits Settlements from 1898 until 1939. At the same time, it was also used in the Federated Malay States, the Unfederated Malay States, Kingdom of Sarawak, Brunei, and British North Borneo. Histor ...
, Malayan dollar,
Sarawak dollar The dollar was the currency of the Raj of Sarawak from 1858 to 1953. It was subdivided into 100 ''cents''. The dollar remained at par with the Straits dollar and its successor the Malayan dollar, the currency of Malaya and Singapore, from it ...
,
British North Borneo dollar The British North Borneo dollar was the currency of British North Borneo from 1882 to 1953. It was subdivided into 100 ''cents''. The dollar had remained at par with the Straits dollar (and its successor the Malayan dollar), the currency of ...
;
Malaya and British Borneo dollar The Malaya and British Borneo dollar (; ) was the currency of Federation of Malaya, Malaya, Colony of Singapore, Singapore, Crown Colony of Sarawak, Sarawak, Crown Colony of North Borneo, North Borneo, Brunei and the Riau archipelago from 1953 ...
) before Malaya, British North Borneo,
Sarawak Sarawak ( , ) is a States and federal territories of Malaysia, state of Malaysia. It is the largest among the 13 states, with an area almost equal to that of Peninsular Malaysia. Sarawak is located in East Malaysia in northwest Borneo, and is ...
, Singapore and Brunei gained their independence from the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
. See also for complete list of currencies. *
Sierra Leone Sierra Leone, officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered to the southeast by Liberia and by Guinea to the north. Sierra Leone's land area is . It has a tropical climate and envi ...
: The Sierra Leonean dollar was used from 1791 to 1805. It was subdivided into 100 cents and was issued by the Sierra Leone Company. The dollar was pegged to sterling at a rate of 1 dollar = 4 shillings 2 pence. *
Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...
: the
Spanish dollar The Spanish dollar, also known as the piece of eight (, , , or ), is a silver coin of approximately diameter worth eight Spanish reales. It was minted in the Spanish Empire following a monetary reform in 1497 with content fine silver. It w ...
was used from 1497 to 1868. It is closely related to the dollars (Spanish dollar was used in the US until 1857) and
euro The euro (currency symbol, symbol: euro sign, €; ISO 4217, currency code: EUR) is the official currency of 20 of the Member state of the European Union, member states of the European Union. This group of states is officially known as the ...
s used today. *
Sri Lanka Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, ...
; the Ceylonese rixdollar was a currency used in
British Ceylon British Ceylon (; ), officially British Settlements and Territories in the Island of Ceylon with its Dependencies from 1802 to 1833, then the Island of Ceylon and its Territories and Dependencies from 1833 to 1931 and finally the Island of Cey ...
in the early 19th Century. *
Rhodesia Rhodesia ( , ; ), officially the Republic of Rhodesia from 1970, was an unrecognised state, unrecognised state in Southern Africa that existed from 1965 to 1979. Rhodesia served as the ''de facto'' Succession of states, successor state to the ...
: the Rhodesian dollar replaced the Rhodesian pound in 1970 and it was used until
Zimbabwe file:Zimbabwe, relief map.jpg, upright=1.22, Zimbabwe, relief map Zimbabwe, officially the Republic of Zimbabwe, is a landlocked country in Southeast Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa to the south, Bots ...
came into being in 1980. *
Republic of Texas The Republic of Texas (), or simply Texas, was a country in North America that existed for close to 10 years, from March 2, 1836, to February 19, 1846. Texas shared borders with Centralist Republic of Mexico, the Republic of the Rio Grande, an ...
: the Texas dollar was issued between January 1839 and September 1840. *
Zimbabwe file:Zimbabwe, relief map.jpg, upright=1.22, Zimbabwe, relief map Zimbabwe, officially the Republic of Zimbabwe, is a landlocked country in Southeast Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa to the south, Bots ...
: uses the Zimbabwe dollar, and also accepts the
South African rand The South African rand, or simply the rand, (currency sign, sign: R; ISO 4217, code: ZAR) is the official currency of South Africa. It is subdivided into 100 Cent (currency), cents (sign: "c"), and a comma separates the rand and cents. The Sou ...
, the
US dollar The United States dollar (symbol: $; currency code: USD) is the official currency of the United States and several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish silver dollar, divided it int ...
, the
Euro The euro (currency symbol, symbol: euro sign, €; ISO 4217, currency code: EUR) is the official currency of 20 of the Member state of the European Union, member states of the European Union. This group of states is officially known as the ...
, the
Pound sterling Sterling (symbol: £; currency code: GBP) is the currency of the United Kingdom and nine of its associated territories. The pound is the main unit of sterling, and the word '' pound'' is also used to refer to the British currency general ...
, the
Botswana pula The Pula (also known as the Botswana dollar) is the currency of Botswana. It has the ISO 4217 code ''BWP'' and is subdivided into 100 ''thebe''. ''Pula'' literally means "rain" in Setswana, because rain is very scarce in Botswana—home to much o ...
, the
Chinese yuan The renminbi ( ; currency symbol, symbol: Yen and yuan sign, ¥; ISO 4217, ISO code: CNY; abbreviation: RMB), also known as the Chinese yuan, is the official currency of the China, People's Republic of China. The renminbi is issued by the Peop ...
, the
Indian rupee The Indian rupee (symbol: ₹; code: INR) is the official currency of India. The rupee is subdivided into 100 '' paise'' (Hindi plural; singular: ''paisa''). The issuance of the currency is controlled by the Reserve Bank of India. The Reserve ...
and the
Japanese yen The is the official currency of Japan. It is the third-most traded currency in the foreign exchange market, after the United States dollar and the euro. It is also widely used as a third reserve currency after the US dollar and the euro. Th ...
.


History


Etymology

On 15 January 1520, the
Kingdom of Bohemia The Kingdom of Bohemia (), sometimes referenced in English literature as the Czech Kingdom, was a History of the Czech lands in the High Middle Ages, medieval and History of the Czech lands, early modern monarchy in Central Europe. It was the pr ...
began minting coins from silver mined locally in Joachimsthal and marked on reverse with the Bohemian lion. The coins were named ''Joachimsthaler'' after the town, becoming shortened in common usage to ''
thaler A thaler or taler ( ; , previously spelled ) is one of the large silver coins minted in the states and territories of the Holy Roman Empire and the Habsburg monarchy during the Early Modern period. A ''thaler'' size silver coin has a diameter o ...
'' or ''taler''. The town's name is derived from Saint Joachim, coupled with the German word ''Thal'' (''Tal'' in modern spelling), which means 'valley' (
cf. The abbreviation cf. (short for either Latin or , both meaning 'compare') is generally used in writing to refer the reader to other material to make a comparison with the topic being discussed. However some sources offer differing or even contr ...
the English term ''dale''); the coin is thus "from the valley of tJoachim". This name found its way into other languages, for example: * German — ''
Thaler A thaler or taler ( ; , previously spelled ) is one of the large silver coins minted in the states and territories of the Holy Roman Empire and the Habsburg monarchy during the Early Modern period. A ''thaler'' size silver coin has a diameter o ...
'' (or ''Taler'') *
Czech Czech may refer to: * Anything from or related to the Czech Republic, a country in Europe ** Czech language ** Czechs, the people of the area ** Czech culture ** Czech cuisine * One of three mythical brothers, Lech, Czech, and Rus *Czech (surnam ...
, Slovak and Slovenian — '' tolar'' * Slovak — ''toliar'' * Croatian — ''talir'' * Polish — ''talar'' *
Low German Low German is a West Germanic languages, West Germanic language variety, language spoken mainly in Northern Germany and the northeastern Netherlands. The dialect of Plautdietsch is also spoken in the Russian Mennonite diaspora worldwide. "Low" ...
— ''daler'' * Dutch — '' rijksdaalder'' (or ''daler'') * Danish and Norwegian — '' rigsdaler'' * Latvian — ''dālderis'' * Swedish — ''
riksdaler The Svenska riksdaler () was the name of a Swedish coin first minted in 1604. Between 1777 and 1873, it was the currency of Sweden. The daler, like the dollar,''National Geographic''. June 2002. p. 1. ''Ask Us''. was named after the German Thale ...
'' * Spanish — '' dólar'' (or ''real de a ocho'' or ''peso duro'') * Hungarian — ''tallér'' *
Ethiopian Ethiopians are the native inhabitants of Ethiopia, as well as the global diaspora of Ethiopia. Ethiopians constitute several component ethnic groups, many of which are closely related to ethnic groups in neighboring Eritrea and other parts of ...
— ''talari'' (ታላሪ) * English — ''dollar'' In contrast to other languages which adopted the second part of word ''joachimsthaler'', the first part found its way into
Russian language Russian is an East Slavic languages, East Slavic language belonging to the Balto-Slavic languages, Balto-Slavic branch of the Indo-European languages, Indo-European language family. It is one of the four extant East Slavic languages, and is ...
and became , (ефимок). The predecessor of the Joachimsthaler was the ''
Guldengroschen The ''Guldengroschen'' or ''Guldiner'' was a large silver coin originally minted in Tirol in 1486, but which was introduced into the Duchy of Saxony in 1500. The name "''Guldengroschen''" came from the fact that it has an equivalent denominat ...
'' or ''Guldiner'' which was a large
silver Silver is a chemical element; it has Symbol (chemistry), symbol Ag () and atomic number 47. A soft, whitish-gray, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. ...
coin A coin is a small object, usually round and flat, used primarily as a medium of exchange or legal tender. They are standardized in weight, and produced in large quantities at a mint in order to facilitate trade. They are most often issued by ...
originally minted in Tirol in 1486 and introduced into the
Duchy of Saxony The Duchy of Saxony () was originally the area settled by the Saxons in the late Early Middle Ages, when they were subdued by Charlemagne during the Saxon Wars from 772 CE and incorporated into the Carolingian Empire (Francia) by 804. Upon the 84 ...
in 1500. The King of Bohemia wanted a similar silver coin, which became the Joachimsthaler.


Europe and colonial North America

The Joachimsthaler of the 16th century was succeeded by the longer-lived
Reichsthaler The ''Reichsthaler'' (; modern spelling Reichstaler), or more specifically the ''Reichsthaler specie'', was a standard thaler silver coin introduced by the Holy Roman Empire in 1566 for use in all German states, minted in various versions for the ...
of the
Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...
, used from the 16th to 19th centuries. The Netherlands also introduced its own dollars in the 16th century: the Burgundian Cross Thaler (''Bourgondrische Kruisdaalder''), the German-inspired '' Rijksdaalder'', and the Dutch lion dollar (''leeuwendaalder''). The latter coin was used for Dutch trade in the Middle East, in the Dutch East Indies and West Indies, and in the
Thirteen Colonies The Thirteen Colonies were the British colonies on the Atlantic coast of North America which broke away from the British Crown in the American Revolutionary War (1775–1783), and joined to form the United States of America. The Thirteen C ...
of North America. For the English North American colonists, however, the Spanish peso or "piece of eight" had always held first place, and this coin was also called the "dollar" as early as 1581.
Spanish dollar The Spanish dollar, also known as the piece of eight (, , , or ), is a silver coin of approximately diameter worth eight Spanish reales. It was minted in the Spanish Empire following a monetary reform in 1497 with content fine silver. It w ...
s or " pieces of eight" were distributed widely in the Spanish colonies in the New World and in the
Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
.National Geographic. June 2002. p. 1. ''Ask Us''.


Origins of the dollar sign

The sign is first attested in business correspondence in the 1770s as a
scribal abbreviation Scribal abbreviations, or sigla (grammatical number, singular: siglum), are abbreviations used by ancient and medieval scribes writing in various languages, including Latin, Greek language, Greek, Old English and Old Norse. In modern Textua ...
"ps", referring to the Spanish American
peso The peso is the monetary unit of several Hispanophone, Spanish-speaking countries in Latin America, as well as the Philippines. Originating in the Spanish Empire, the word translates to "weight". In most countries of the Americas, the symbol com ...
, that is, the "Spanish dollar" as it was known in British North America. These late 18th- and early 19th-century manuscripts show that the ''s'' gradually came to be written over the ''p'' developing a close equivalent to the "$" mark, and this new symbol was retained to refer to the American dollar as well, once this currency was adopted in 1785 by the United States.


Adoption by the United States

By the time of the
American Revolution The American Revolution (1765–1783) was a colonial rebellion and war of independence in which the Thirteen Colonies broke from British America, British rule to form the United States of America. The revolution culminated in the American ...
, the Spanish dólar gained significance because they backed paper money authorized by the individual colonies and the
Continental Congress The Continental Congress was a series of legislature, legislative bodies, with some executive function, for the Thirteen Colonies of British America, Great Britain in North America, and the newly declared United States before, during, and after ...
. Because Britain deliberately withheld hard currency from the American colonies, virtually all the non-token coinage in circulation was Spanish (and to a much lesser extent French and Dutch) silver, obtained via illegal but widespread commerce with the West Indies. Common in the Thirteen Colonies, Spanish dólar were even
legal tender Legal tender is a form of money that Standard of deferred payment, courts of law are required to recognize as satisfactory payment in court for any monetary debt. Each jurisdiction determines what is legal tender, but essentially it is anything ...
in one colony,
Virginia Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...
. On 2 April 1792, U.S.
Secretary of the Treasury The United States secretary of the treasury is the head of the United States Department of the Treasury, and is the chief financial officer of the federal government of the United States. The secretary of the treasury serves as the principal a ...
Alexander Hamilton Alexander Hamilton (January 11, 1755 or 1757July 12, 1804) was an American military officer, statesman, and Founding Fathers of the United States, Founding Father who served as the first U.S. secretary of the treasury from 1789 to 1795 dur ...
reported to Congress the precise amount of silver found in
Spanish dollar The Spanish dollar, also known as the piece of eight (, , , or ), is a silver coin of approximately diameter worth eight Spanish reales. It was minted in the Spanish Empire following a monetary reform in 1497 with content fine silver. It w ...
coins in common use in the states. As a result, the
United States dollar The United States dollar (Currency symbol, symbol: Dollar sign, $; ISO 4217, currency code: USD) is the official currency of the United States and International use of the U.S. dollar, several other countries. The Coinage Act of 1792 introdu ...
was defined''Act of April 2, A.D. 1792 of the Senate and House of Representatives of the United States of America in Congress assembled, Section 9''. as a unit of pure silver weighing 371 4/16th grains (24.057 grams), or 416 grains of standard silver (standard silver being defined as 371.25/416 in silver, and balance in alloy).Section 13 of the Act. It was specified that the "money of account" of the United States should be expressed in those same "dollars" or parts thereof. Additionally, all lesser-denomination coins were defined as percentages of the dollar coin, such that a half-dollar was to contain half as much silver as a dollar, quarter-dollars would contain one-fourth as much, and so on. In an act passed in January 1837, the dollar's weight was reduced to 412.5 grains and alloy at 90% silver, resulting in the same fine silver content of 371.25 grains. On 21 February 1853, the quantity of silver in the lesser coins was reduced, with the effect that their denominations no longer represented their silver content relative to dollar coins. Various acts have subsequently been passed affecting the amount and type of metal in U.S. coins, so that today there is no legal definition of the term "dollar" to be found in U.S. statute. Currently the closest thing to a definition is found in United States Code Title 31, Section 5116, paragraph b, subsection 2: "The Secretary f the Treasuryshall sell silver under conditions the Secretary considers appropriate for at least $1.292929292 a fine troy ounce." Silver was mostly removed from U.S. coinage by 1965 and the dollar became a free-floating
fiat money Fiat money is a type of government-issued currency that is not backed by a precious metal, such as gold or silver, nor by any other tangible asset or commodity. Fiat currency is typically designated by the issuing government to be legal tende ...
without a commodity backing defined in terms of real gold or silver. The US Mint continues to make silver $1-denomination coins, but these are not intended for general circulation.


Relationship to the troy pound

The quantity of silver chosen in 1792 to correspond to one dollar, namely, 371.25 grains of pure silver, is very close to the
geometric mean In mathematics, the geometric mean is a mean or average which indicates a central tendency of a finite collection of positive real numbers by using the product of their values (as opposed to the arithmetic mean which uses their sum). The geometri ...
of one
troy pound Troy weight is a system of Physical unit, units of mass that originated in the Kingdom of England in the 15th century and is primarily used in the precious metals industry. The troy weight units are the Grain (unit), grain, the pennyweight (24 ...
and one
pennyweight A pennyweight (dwt) is a unit of mass equal to 24 grains, of a troy ounce, of a troy pound, avoirdupois ounce and exactly 1.55517384 grams. It is abbreviated dwt, ''d'' standing for ''denarius'' (an ancient Roman coin), and later ...
. In what follows, "dollar" will be used as a unit of mass. A troy pound being 5760
grains A grain is a small, hard, dry fruit ( caryopsis) – with or without an attached hull layer – harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and le ...
and a pennyweight being 240 times smaller, or 24 grains, the geometric mean is, to the nearest hundredth, 371.81 grains. This means that the ratio of a pound to a dollar (15.52) roughly equals the ratio of a dollar to a pennyweight (15.47). These ratios are also very close to the ratio of a gram to a grain: 15.43. Finally, in the United States, the ratio of the value of gold to the value of silver in the period from 1792 to 1873 averaged to about 15.5, being 15 from 1792 to 1834 and around 16 from 1834 to 1873. This is also nearly the value of the gold to silver ratio determined by Isaac Newton in 1717. That these three ratios are all approximately equal has some interesting consequences. Let the gold to silver ratio be exactly 15.5. Then a pennyweight of gold, that is 24 grains of gold, is nearly equal in value to a dollar of silver (1 dwt of gold = $1.002 of silver). Second, a dollar of gold is nearly equal in value to a pound of silver ($1 of gold = 5754 3/8 grains of silver = 0.999 Lb of silver). Third, the number of grains in a dollar (371.25) roughly equals the number of grams in a troy pound (373.24).


Usage in the United Kingdom

There are two quotes in the plays of
William Shakespeare William Shakespeare ( 23 April 1564 – 23 April 1616) was an English playwright, poet and actor. He is widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist. He is often called England's nation ...
referring to dollars as money. Coins known as "thistle dollars" were in use in
Scotland Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...
during the 16th and 17th centuries, and use of the English word, and perhaps even the use of the coin, may have begun at the
University of St Andrews The University of St Andrews (, ; abbreviated as St And in post-nominals) is a public university in St Andrews, Scotland. It is the List of oldest universities in continuous operation, oldest of the four ancient universities of Scotland and, f ...
. This might be supported by a reference to the sum of "ten thousand dollars" in ''
Macbeth ''The Tragedy of Macbeth'', often shortened to ''Macbeth'' (), is a tragedy by William Shakespeare, estimated to have been first performed in 1606. It dramatises the physically violent and damaging psychological effects of political ambiti ...
'' (act I, scene II) (an
anachronism An anachronism (from the Greek , 'against' and , 'time') is a chronological inconsistency in some arrangement, especially a juxtaposition of people, events, objects, language terms and customs from different time periods. The most common type ...
because the real
Macbeth ''The Tragedy of Macbeth'', often shortened to ''Macbeth'' (), is a tragedy by William Shakespeare, estimated to have been first performed in 1606. It dramatises the physically violent and damaging psychological effects of political ambiti ...
, upon whom the play was based, lived in the 11th century). In the Sherlock Holmes story " The Man with the Twisted Lip" by Sir Arthur Conan Doyle, published in 1891, an Englishman posing as a London beggar describes the shillings and pounds he collected as dollars. In 1804, a British five-
shilling The shilling is a historical coin, and the name of a unit of modern currency, currencies formerly used in the United Kingdom, Australia, New Zealand, other British Commonwealth countries and Ireland, where they were generally equivalent to 1 ...
piece, or
crown A crown is a traditional form of head adornment, or hat, worn by monarchs as a symbol of their power and dignity. A crown is often, by extension, a symbol of the monarch's government or items endorsed by it. The word itself is used, parti ...
, was sometimes called "dollar". It was an overstruck Spanish eight real coin (the famous " piece of eight"), the original of which was known as a Spanish dollar. Large numbers of these eight-real coins were captured during the
Napoleonic Wars {{Infobox military conflict , conflict = Napoleonic Wars , partof = the French Revolutionary and Napoleonic Wars , image = Napoleonic Wars (revision).jpg , caption = Left to right, top to bottom:Battl ...
, hence their re-use by the
Bank of England The Bank of England is the central bank of the United Kingdom and the model on which most modern central banks have been based. Established in 1694 to act as the Kingdom of England, English Government's banker and debt manager, and still one ...
. They remained in use until 1811. During
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, when the U.S. dollar was (approximately) valued at five shillings, the half crown (2s 6d) acquired the nickname "half dollar" or "half a dollar" in the UK.


Usage elsewhere

Chinese demand for silver in the 19th and early 20th centuries led several countries, notably the United Kingdom, United States and
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
, to mint trade dollars, which were often of slightly different weights from comparable domestic coinage. Silver dollars reaching China (whether Spanish, trade, or other) were often stamped with Chinese characters known as " chop marks", which indicated that that particular coin had been assayed by a well-known merchant and deemed genuine.


Other national currencies called "dollar"

Prior to 1873, the silver dollar circulated in many parts of the world, with a value in relation to the British gold
sovereign ''Sovereign'' is a title that can be applied to the highest leader in various categories. The word is borrowed from Old French , which is ultimately derived from the Latin">-4; we might wonder whether there's a point at which it's appropriate to ...
of roughly $1 = 4s 2d (21p approx). As a result of the decision of the German Empire to stop minting silver ''thaler'' coins in 1871, in the wake of the
Franco-Prussian War The Franco-Prussian War or Franco-German War, often referred to in France as the War of 1870, was a conflict between the Second French Empire and the North German Confederation led by the Kingdom of Prussia. Lasting from 19 July 1870 to 28 Janua ...
, the worldwide price of silver began to fall. This resulted in the U.S. Coinage Act (1873) which put the United States onto a ' de facto' gold standard.
Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
and
Newfoundland Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the population ...
were already on the gold standard, and the result was that the value of the dollar in North America increased in relation to silver dollars being used elsewhere, particularly
Latin America Latin America is the cultural region of the Americas where Romance languages are predominantly spoken, primarily Spanish language, Spanish and Portuguese language, Portuguese. Latin America is defined according to cultural identity, not geogr ...
and the
Far East The Far East is the geographical region that encompasses the easternmost portion of the Asian continent, including North Asia, North, East Asia, East and Southeast Asia. South Asia is sometimes also included in the definition of the term. In mod ...
. By
1900 As of March 1 ( O.S. February 17), when the Julian calendar acknowledged a leap day and the Gregorian calendar did not, the Julian calendar fell one day further behind, bringing the difference to 13 days until February 28 ( O.S. February 15 ...
, value of silver dollars had fallen to 50 percent of gold dollars. Following the abandonment of the gold standard by Canada in 1931, the
Canadian dollar The Canadian dollar (currency symbol, symbol: $; ISO 4217, code: CAD; ) is the currency of Canada. It is abbreviated with the dollar sign $. There is no standard disambiguating form, but the abbreviations Can$, CA$ and C$ are frequently used f ...
began to drift away from parity with the U.S. dollar. It returned to parity a few times, but since the end of the
Bretton Woods system The Bretton Woods system of monetary management established the rules for commercial relations among 44 countries, including the United States, Canada, Western European countries, and Australia, after the 1944 Bretton Woods Agreement until the ...
of fixed exchange rates that was agreed to in 1944, the Canadian dollar has been floating against the U.S. dollar. The silver dollars of Latin America and
South East Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
began to diverge from each other as well during the course of the 20th century. The
Straits dollar The Straits dollar was the currency of the Straits Settlements from 1898 until 1939. At the same time, it was also used in the Federated Malay States, the Unfederated Malay States, Kingdom of Sarawak, Brunei, and British North Borneo. Histor ...
adopted a gold exchange standard in 1906 after it had been forced to rise in value against other silver dollars in the region. Hence, by 1935, when China and
Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
came off the
silver standard The silver standard is a monetary system in which the standard economic unit of account is a fixed weight of silver. Silver was far more widespread than gold as the monetary standard worldwide, from the Sumerians 3000 BC until 1873. Following t ...
, the Straits dollar was worth 2s 4d (11.5p approx) sterling, whereas the
Hong Kong dollar The Hong Kong dollar (, sign: HK$; code: HKD) is the official currency of Hong Kong. It is divided into 100 cents. Historically, it was also divided into 1000 mils. The Hong Kong Monetary Authority is the monetary authority of Hong Kong an ...
was worth only 1s 3d sterling (6p approx). The term "dollar" has also been adopted by other countries for currencies which do not share a common history with other dollars. Many of these currencies adopted the name after moving from a
£sd file:Guildhall Museum Collection- Drusilla Dunford Money Table Sampler 3304.JPG, A Sampler (needlework), sampler in the Rochester Guildhall, Guildhall Museum of Rochester, Medway, Rochester illustrates the conversion between pence and shillings ...
-based to a decimalized monetary system. Examples include the
Australian dollar The Australian dollar (currency sign, sign: $; ISO 4217, code: AUD; also abbreviated A$ or sometimes AU$ to distinguish it from other dollar, dollar-denominated currencies; and also referred to as the dollar or Aussie dollar) is the official ...
, the
New Zealand dollar The New Zealand dollar (; currency sign, sign: $; ISO 4217, code: NZD) is the official currency and legal tender of New Zealand, the Cook Islands, Niue, the Ross Dependency, Tokelau, and a British territory, the Pitcairn Islands. Within New Zeal ...
, the Jamaican dollar, the Cayman Islands dollar, the Fiji dollar, the
Namibian dollar The Namibia dollar (currency symbol, symbol: $ or N$; ISO 4217, code: NAD) has been the currency of Namibia since 1993. It is normally abbreviated with the dollar sign ($), or alternatively N$ to distinguish it from other currencies called “d ...
, the Rhodesian dollar, the Zimbabwe dollar, and the
Solomon Islands dollar The Solomon Islands dollar (ISO 4217 code: ''SBD'') is the currency of Solomon Islands since 1977. Its symbol is $, with SI$ used to differentiate it from other currencies also using the dollar sign. It is subdivided into 100 cent (currency), c ...
. * The '' tala'' is based on the Samoan pronunciation of the word "dollar". * The Slovenian tolar had the same etymological origin as dollar (that is, ''
thaler A thaler or taler ( ; , previously spelled ) is one of the large silver coins minted in the states and territories of the Holy Roman Empire and the Habsburg monarchy during the Early Modern period. A ''thaler'' size silver coin has a diameter o ...
''). * The Swedish Daler used to be the name for the currency and have the same etymological origin as the German ''
thaler A thaler or taler ( ; , previously spelled ) is one of the large silver coins minted in the states and territories of the Holy Roman Empire and the Habsburg monarchy during the Early Modern period. A ''thaler'' size silver coin has a diameter o ...
'').


See also

* Eurodollar *
List of circulating currencies There are 180 currency, currencies recognized as legal tender in United Nations (UN) Member states of the United Nations, member states, United Nations General Assembly observers, UN General Assembly non-member observer states, List of states wi ...
* North American currency union Amero * Petrodollar


References


External links


Etymonline (word history)
for ''buck''
Etymonline (word history)
for ''dollar''

CNNMoney.com {{Authority control Denominations (currency) Numismatics Obsolete currencies in Malaysian history