assay-mark

• Знак, наносимый на предмет торговли для указания его происхождения и подлинности.

A mark placed on an article of trade to indicate its origin and authenticity.

1. Hallmark or stamp of authenticityC1formal

   A mark placed on an item, especially precious metals, to certify its quality, purity, or origin.

   Пробирное клеймо

   • The gold ring bore an assay-mark confirming its 18-karat purity.
   • Antique silverware often has an assay-mark indicating the maker and year.
   • Jewelers check the assay-mark to verify the metal's authenticity.

   Синонимыhallmark