A coin issued by an official or original entity. Authentic indicates it is not a replica or counterfeit coin.
Au
Elemental (scientific) abbreviation for gold.
Blank
Applied to a piece of metal before it is struck by the dies to convert it into a coin.
Bullion coin
Coins made of a precious metal and traded at current bullion prices, or at a small premium over bullion. Bullion value of a coin is used at or close to its intrinsic metal value.
Bust
Portrait on a coin, usually displaying the head, or head and shoulders of an honoured person.
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