The hallmark for sterling silver varies from nation to nation, often using distinctive historic symbols, although Dutch and UK Assay offices no longer strike their traditional hallmarks exclusively in their own territories and undertake assay in other countries using marks that are the same as those used domestically.
Hallmark date stamps on silver, gold, and platinum for the Offices of London, Birmingham, Sheffield, and Edinburgh from 1678 – 1974 London Dated Hallmarks from 1678 – 1974. Dating UK Hallmarks See all the main dated hallmarks from the UK since 1678 International Hallmarks How to identify the international hallmarks on gold, silver and platinum products.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.Hallmarks are applied with a hammer and punch, a process that leaves sharp edges and spurs of metal.Therefore, hallmarking is generally done before the piece goes for its final polishing.
Dating english silver marks
Rare Gold and Silver Hallmarks Hallmarks used for events, dates or hallmarks that are no longer made.Understanding British Hallmarks The 8 hallmarks that guarantee the quality and value on UK Assayed products.Since these could vary considerably in purity, from around .750 millesimal fineness to around .900, silver known as "coin silver" varies in purity.Silver at that time was sometimes marked "COIN" or "PURE COIN", but can also be without a standard mark altogether.An item with a registry mark or number could have been produced before (less likely as the design would not be protected), or after the date of the registry mark.