A silver object that is to be sold commercially is, in most countries, stamped with one or more silver hallmarks indicating the purity of the silver, the mark of the manufacturer or silversmith, and other (optional) markings to indicate the date of manufacture and additional information about the piece. In some countries, a national assayer's office controls the testing of silver objects and marking of purity.
A silver object that is to be sold commercially is, in most countries, stamped with one or more silver hallmarks indicating the purity of the silver, the mark of the manufacturer or silversmith, and other (optional) markings to indicate the date of manufacture and additional information about the piece. In some countries, a national assayer's office controls the testing of silver objects and marking of purity.
Source: Wikipedia "Silver hallmarks" · CC BY-SA 4.0
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