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Proof Coinage
Proof coinage refers to special early samples of a coin issue, historically made for checking the die (manufacturing), dies (as in demonstrating that something is true) and for archival purposes. In modern times, proofs are often struck in greater numbers, especially for coin collecting, coin collectors (numismatists). Nearly all countries have issued proof coinage. Preparation of a proof striking usually involved polishing of the dies. They can usually be distinguished from normal circulation coins by their sharper rims and design, as well as much smoother "fields"— the blank areas not part of the coin's design. The dies for making modern proof coins are often treated with chemicals to make certain parts of the design take on a frosted appearance, with the polished fields taking on a mirror finish. Several other methods have been used in the past to achieve this effect, including sand blasting the dies, and matte proofs. Proof coins of the early 19th century even appear to b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1662 Proof Coinage 1662年のプルーフ貨幣
Year 166 (Roman numerals, CLXVI) was a common year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Pudens and Pollio (or, less frequently, year 919 ''Ab urbe condita''). The denomination 166 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Dacia is invaded by barbarians. * Conflict erupts on the Danube frontier between Ancient Rome, Rome and the Germanic tribes, Germanic tribe of the Marcomanni. * Emperor Marcus Aurelius appoints his sons Commodus and Marcus Annius Verus Caesar, Marcus Annius Verus as co-rulers (Caesar (title), Caesar), while he and Lucius Verus travel to Germany. * End of the war with Parthia: The Parthians leave Armenia and eastern Mesopotamia, which both become Roman protectorates. * A plague (possibly small pox) comes from the East and spreads throughout the Rom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A 1969 United States Mint Proof Set
A, or a, is the first letter and the first vowel letter of the Latin alphabet, used in the modern English alphabet, and others worldwide. Its name in English is '' a'' (pronounced ), plural ''aes''. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version is often written in one of two forms: the double-storey and single-storey . The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type. In English, '' a'' is the indefinite article, with the alternative form ''an''. Name In English, the name of the letter is the ''long A'' sound, pronounced . Its name in most other languages matches the letter's pronunciation in open syllables. History The earliest known ancestor of A is ''aleph''—the first letter of the Phoenician ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denver Mint
The Denver Mint is a branch of the United States Mint that struck its first coins on February 1, 1906. The mint is still operating and producing coins for circulation, as well as mint sets and commemorative coins. Coins produced at the Denver Mint bear a D mint mark (as did the Dahlonega Mint, which closed before the Denver branch opened). The Denver Mint is the single largest producer of coins in the world. History Clark, Gruber & Co. The predecessors of the Denver Mint were the men of Clark, Gruber and Company. During the Pikes Peak Gold Rush, they coined gold dust brought from the gold fields by the miners. In 1858, Austin M. Clark, Milton E. Clark and Emanuel Henry Gruber founded a brokerage firm in Leavenworth, Kansas, and then established an office in Denver at the beginning of the Colorado Gold Rush. Desiring to save on shipping and insurance costs associated with shipping gold back east, the firm opened a private mint. On July 25, 1860, the mint opened in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philadelphia Mint
The Philadelphia Mint is a branch of the United States Mint in Philadelphia. It was built in 1792 following the Coinage Act of 1792, in order to establish a national identity and the needs of commerce in the United States, and is the first and oldest national mint. History First building (1792–1833) The Coinage Act of 1792 entered into law on April 2, proclaiming the creation of the United States Mint. Philadelphia at that time was the nation's capital, and the first mint facility was built there. David Rittenhouse, an American scientist, was appointed the first director of the mint by President George Washington. Two lots were purchased by Rittenhouse on July 18, 1792, at Seventh Street and 631 Filbert Street in Philadelphia for $4,266.67. The next day, demolition of an abandoned whiskey distillery on the property began. Foundation work began on July 31; by September 7, the first building was ready for installation of the smelting furnace. The smelt house was the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Susan B
Susan is a feminine given name, the usual English version of Susanna or Susannah. All are versions of the Hebrew name Shoshana, which is derived from the Hebrew ''shoshan'', meaning ''lotus flower'' in Egyptian, original derivation, and several other languages. Variations * Susana, Susanna (or Suzanna), Susannah, Suzana, Suzannah * Susann, Sussan, Suzan, Suzann * Susanne, Suzanne * Susanne * Suzan * Suzanne * Suzette * Susie, Suzy Nicknames Common nicknames for Susan include: * Sue, Susie, Susi (German), Suzi, Suzy, Suzie, Suze, Sanna, Suzie, Sookie, Sukie, Sukey, Subo, Suus (Dutch), Shanti In other languages * Albanian and * * , or * * , or * * , or * Catalan, Estonian and * ** * 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 ... and * D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco Mint
The San Francisco Mint is a branch of the United States Mint. Opened in 1854 to serve the gold mines of the California gold rush, in twenty years its operations exceeded the capacity of the first building. It moved into a new one in 1874, now known as the Old San Francisco Mint. In 1937 Mint operations moved into a third building, the current one, completed that year. History Original United States Mint and Subtreasury (1854) The San Francisco Mint began operations in 1854 at 608 Commercial Street, just west of Montgomery Street. The building sat between Commercial and Clay Streets and a California Historical Landmark (number 87) plaque can be found today on Commercial. Since June 14, 1970, the building has been listed as a San Francisco Designated Landmark. The mint was established in response to the California gold rush. Within the first year of its operation, the San Francisco mint turned $4 million in gold bullion into coins. Because of the scale of its incre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half Dollar (United States Coin)
The half dollar, sometimes referred to as the half for short or 50-cent piece, is a United States coin worth 50 cents, or one half of a dollar. In both size and weight, it is the largest circulating coin currently minted in the United States, being in diameter and in thickness, and is twice the weight of the quarter. The coin's design has undergone a number of changes throughout its history. Since 1964, the half dollar depicts the profile of President John F. Kennedy on the obverse and the seal of the president of the United States on the reverse. Although seldom used today, half-dollar coins were once common in circulation and saw regular use alongside other denominations of US coinage, but have become uncommon in general circulation for several reasons. Half-dollars were produced in fairly large quantities until the year 2002, when the U.S. Mint reduced production of the coin and ceased minting them for regular circulation. As a result of its decreasing usage, many pre- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarter (United States Coin)
The quarter, formally known as the quarter dollar, is a coin in the United States valued at 25 cents, representing one-quarter of a United States dollar, dollar. Adorning its obverse is the profile of George Washington, while its reverse design has undergone frequent changes since 1998. Since its initial production in 1796, the quarter dollar has held a significant place in American numismatics, with consistent production since 1831. It has a diameter of 0.955 inch (24.26 mm) and a thickness of 0.069 inch (1.75 mm). Its current version is composed of two layers of cupronickel (75% copper, 25% nickel) clad on a core of pure copper. With the cupronickel layers comprising 1/3 of total weight, the coin's overall composition is therefore 8.33% nickel, 91.67% copper. Its weight is 0.1823 troy oz. or 0.2000 Avoirdupois system, avoirdupois oz. (5.670 grams). Designs before 1932 The choice of a quarter-dollar as a denomination, as opposed to the or the 20-cent piece that is m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dime (United States Coin)
The dime, in United States usage, is a ten- cent coin, one tenth of a United States dollar, labeled formally as "one dime". The denomination was first authorized by the Coinage Act of 1792. The dime is the smallest in diameter and is the thinnest of all U.S. coins currently minted for circulation, being in diameter and in thickness. The obverse of the current dime depicts the profile of President Franklin D. Roosevelt and the reverse has an olive branch, a torch, and an oak branch, from left to right respectively. The word ''dime'' comes from the Old French ''disme'' (Modern French">-4; we might wonder whether there's a point at which it's appropriate to talk of the beginnings of French, that is, when it wa ... ''disme'' (Modern French dîme), meaning "tithe" or "tenth part", from the Latin ''decima [pars]''. The dime is currently the only United States coin in general circulation that is not denominated in terms of dollars or cent (United States coin), cents. , the dime co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nickel (United States Coin)
A nickel is a five-cent (currency), cent coin struck by the United States Mint. Composed of cupronickel (75% copper and 25% nickel), the piece has been issued since 1866. Its diameter is 0.835 inches (21.21 mm) and its thickness is 0.077 inches (1.95 mm). The silver half dime, equal to five cents, was issued from 1792 to 1873 before today's cupronickel version. The American Civil War caused economic hardship, driving gold and silver from circulation; in response, in place of low-value coins, the government at first issued paper currency. In 1865, Congress abolished the five-cent fractional currency note after Spencer M. Clark, head of the Currency Bureau (today the Bureau of Engraving and Printing), placed his own portrait on the denomination. After the successful introduction of two-cent piece (United States coin), two-cent and three-cent nickel, three-cent pieces without precious metal, Congress also authorized a five-cent piece consisting of base metal; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penny (United States Coin)
The penny, officially known as the cent, is a coin in the United States representing one-hundredth of a dollar. It has been the lowest face-value physical unit of U.S. currency since the abolition of the half-cent in 1857 (the abstract mill, which has never been minted, equal to a tenth of a cent, continues to see limited use in the fields of taxation and finance). The U.S. Mint's official name for the coin is " cent" and the U.S. Treasury's official name is "one cent piece". The colloquial term ''penny'' derives from the British coin of the same name, which occupies a similar place in the British system. ''Pennies'' is the plural form (not to be confused with ''pence'', which refers to the unit of currency). The first U.S. cent was produced in 1787, and the cent has been issued primarily as a copper or copper-plated coin throughout its history. In 1792, Congress established the US Mint, which began producing coins. In the same year, the Coinage Act of 1792 mand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nickel (U
Nickel is a chemical element; it has symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive, but large pieces are slow to react with air under standard conditions because a passivation layer of nickel oxide forms on the surface that prevents further corrosion. Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth's atmosphere. Meteoric nickel is found in combination with iron, a reflection of the origin of those elements as major end products of supernova nucleosynthesis. An iron–nickel mixture is thought to compose Earth's outer and inner cores. Use of nickel (as natural meteoric nickel–iron alloy) has been traced as far back as 3500 BCE. Nickel was first isolated and classified as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
