Potin (also known as
billon) is a
base metal
A base metal is a common and inexpensive metal, as opposed to a precious metal such as gold or silver. In numismatics, coins often derived their value from the precious metal content; however, base metals have also been used in coins in the past ...
silver
Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, whi ...
-like
alloy
An alloy is a mixture of chemical elements of which at least one is a metal. Unlike chemical compounds with metallic bases, an alloy will retain all the properties of a metal in the resulting material, such as electrical conductivity, ductility, ...
used in coins. It is typically a mixture of
copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...
,
tin
Tin is a chemical element with the symbol Sn (from la, stannum) and atomic number 50. Tin is a silvery-coloured metal.
Tin is soft enough to be cut with little force and a bar of tin can be bent by hand with little effort. When bent, t ...
and
lead
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cu ...
(in varying proportions) and it is debated whether any actual silver needs to be present.
While the term ''billon'' is more commonly applied to ancient Roman coinage, ''potin'' is usually used for Greek or Celtic coinage.
Use in Celtic coinage
![ESS-DFE710 Iron Age class I Potin (FindID 235690)](https://upload.wikimedia.org/wikipedia/commons/e/eb/ESS-DFE710_Iron_Age_class_I_Potin_%28FindID_235690%29.jpg)
In 1890, so-called ''Potin lumps'' were found, of which the largest weighs , at the
Prehistoric pile dwelling settlement ''
Alpenquai'' in Zürich (
''Vicus Turicum'') in Switzerland. The pieces consist of a large number of fused
Celtic
Celtic, Celtics or Keltic may refer to:
Language and ethnicity
*pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia
**Celts (modern)
*Celtic languages
**Proto-Celtic language
* Celtic music
*Celtic nations
Sports Fo ...
coins, which are mixed with charcoal remnants. Some of the about 18,000 coins originate from the
''Eastern Gaul'', and others are of the ''Zürich'' type, that were assigned to the local ''
Helvetii
The Helvetii ( , Gaulish: *''Heluētī''), anglicized as Helvetians, were a Celts, Celtic tribe or tribal confederation occupying most of the Swiss plateau at the time of their Switzerland in the Roman era, contact with the Roman Republic in the ...
'', which date to around 100 BC. The find is so far unique, and the scientific research assumes that the melting down of the lump was not completed, therefore the aim was to form cult offerings. The site of the find was at that time at least from the lake shore, and probably to deep in the water.
[''Keltisches Geld in Zürich: Der spektakuläre «Potinklumpen»''. Amt für Städtebau der Stadt Zürich, Stadtarchäologie, Zürich October 2007.]
Kentish cast bronzes
Kentish may be used as a name:
*Kentish Council is a local government area in Tasmania, Australia
*Kentish Town is an area of north west London, England
Kentish as a surname:
*John Kentish (minister), 1768–1853
*John Kentish (tenor), 1910&nd ...
(historically referred to as Thurrock potins) appear to have been the first coins made in Britain dating from the end of the second century BC.
They appear to have circulated mainly in Kent and were based on coins issued by
Massalia
Massalia (Greek: Μασσαλία; Latin: Massilia; modern Marseille) was an ancient Greek colony founded ca. 600 BC on the Mediterranean coast of present-day France, east of the river Rhône, by Ionian Greek settlers from Phocaea, in Western An ...
(now Marseille).
See also
*
Tin coinage
In Devon and Cornwall, tin coinage was a tax on refined tin, payable to the Duchy of Cornwall and administered in the Stannary Towns. The oldest surviving records of coinage show that it was collected in 1156. It was abolished by the Tin Dut ...
References
Precious metal alloys
Numismatic terminology
Silver
Coinage metals and alloys
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