After the adoption of the sterling standard, pieces were marked with "STERLING", the number "925" or the notation "925/1000".While American manufacturers did not apply assay marks, city marks or date marks, they did apply a maker's mark. The old hallmarks were as unique as today's logos, and disputes often arose when one company copied another's stamp.French silver made for export carries an assay mark in the shape of the head of Mercury, along with a number to indicate the millesimal fineness: "1" for .920, "2" for .840 and "3" for .750.
Meanwhile a hexagonal frame represented 900 fine silver.
The same logic was also used to frame gold hallmarks.
The name of the artist or manufacturer may now be used for this." Between 18, Austria-Hungary and later, Hungary used the crescent moon crowned head of antique greek heroine Diana as the hallmarking symbol of legal silver alloys.
The head was encircled by a frame, optionally composed of convex, concave and straight lines.
A hallmark is an official mark or series of marks struck on items made of precious metals—platinum, gold, silver and in some nations, palladium.