By itself, the noble metal is quite soft, especially in large sizes, so it can be easily scratched and deformed. For example, it is enough to recall the way of storing gold coins - "by the tooth". They were bitten - and if dents remain on the surface, this is a real banknote, not a fake. The 92nd proof was used to make jewelry and jewelry intended for infrequent wear. From it were pectoral crosses, chains, "ceremonial" rings, brooches and earrings.
As a rule, products are made to order, individually according to design - and therefore are supplemented with family hallmarks.