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  Numismatic Glossary
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Glossary
  • alloy: A substance composed of several metals.
  • bagmarks: Surface marks caused by impact from other coins during the handling process before the coin enters circulation.
  • bank roll: A common means of distributing coins where a bank would roll coins before distributing them to branches or customers.
  • base value: The base metal value of a coin.
  • bullion value: The base metal value of a coin.
  • business strike: A coin struck for circulation.
  • debase: The state act of reducing the precious metal content of a denomination.
  • die: A cylindrical punch with an inverted impression of a coin's design used to strike the coin.
  • die crack: A crack on the die which produces a raised line on the die it produces, or on the coins it strikes
  • die number: A number appearing on a coin indicating which die struck it used prior to 1880 in the United Kingdom.
  • die polishing striations: Raised lines on the surface of a coin caused by abrasive polishing of the die that struck it.
  • error: A coin struck with a significant enough or amount of flaws that it should not have been permitted into circulation.
  • exergue: a space on the reverse of a coin or medal below the central design, often containing the date, mint, or other information
  • face value: The nominal value of a coin.
  • fields: The open, exposed areas of a coin's design.
  • hoard: A large number of coins found from a single source that have never before reached the collector market.
  • issue price: The price a collector coin is sold to the public at the time of issue.
  • key date: A difficult date to acquire in any grade, hence being the key to a series.
  • legend: The inscription around the inner edge of the coin.
  • master die: A cylindrical punch with an impression of a coin's design used to strike the working dies of a coin.
  • mint: a facility that produces coins
  • mint bloom: The way light reflects off a coin's original surfaces.
  • mint brilliance: The original golden-red-orange-pink colour of a copper coin.
  • mint roll: A common means of distributing coins where a mint stores coins in paper rolls before distributing them to banks.
  • mint state: A state of a coin that shows no signs of circulation.
  • mintage: The number of coins struck of a particular designation.
  • mintmark: A mark, ususally a dot or a letter indicating the mint which struck the coin.
  • obverse: The heads side of the coin.
  • overdate: A coin with a numeral in the date punched or tooled over another numeral.
  • pattern: A coin struck as a representation piece of a coin that never eventuated.
  • planchet: The piece of metal a coin is struck on.
  • proof: A coin struck from specially prepared dies to strike a superior quality coin not intended for circulation.
  • proof-like: A coin that resembles the appearance of a proof coin of the same type, often resulting from being struck from the same dies.
  • relief: The raised part of a coin's design.
  • restrike: A coin struck from a particular coin's original dies after the intended year of issue.
  • reverse: The tails side of the coin.
  • rim: The edge around a coin, often with beading or denticles.
  • scrap value: The base metal value of a coin.
  • security roll: A common means of distributing coins where a security company would roll coins before transporting them.
  • specimen: A coin struck from an early circulation die state, not intended for circulation.
  • surface hairlines: Fine surface marks caused by other coins scraping against them.
  • toning: Discolouration of the surface of a coin caused by environmental exposure.
  • treasury note: a debt issued by the government much like banknotes are for banks
  • trial: A coin struck to prepare for the striking commercial issues, often to test dies or as a representation piece submitted for approval.
  • type set: A collection consisting of one coin of each type and possibly variety.
  • uniface: A coin struck with one face blank.
  • variety: A coin which features a slightly different design from that which is normally seen.
  • working die: The die with a reversed impression of the coin used to strike the actual coins.
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