In 1961, the American government also mandated that jewelry manufacturers include a maker’s mark, which indicates the maker.
Hallmarking in Great Britain has had a long history dating back to the 14th century and today’s standards are regulated by the Hallmarking Act of 1973.
Silver purity marks also specify metal content where sterling silver is 92.5 percent pure silver.
Therefore, for sterling silver, look for marks that include “925,” “STERLING,” “STG,” or “STER.” Watch out for metals that are etched with “German Silver” or “Nickel Silver”- these pieces are not made up of any silver at all, but are actually composed of copper, nickel, and zinc.
Since gold, silver, and branded jewelry are highly sought-after, encountering counterfeit jewelry is always a risk that collectors need to keep in mind.