ホールマーク

Also known as hall-mark

thumb|A hallmark is Punch (tool)|punched into a section of a silver chain by a [[silversmith.]] A hallmark is an official mark or series of marks struck on items made of metal, mostly to certify the content of noble metals—such as platinum, gold, silver and in some nations, palladium. In a more general sense, the term hallmark is used to refer to any standard of quality. Not to be confused with responsibility marks that are the marks of the maker.