Hallmark - Wikipedia
en.wikipedia.org › wiki › HallmarkA hallmark is an official mark or series of marks struck on items made of metal, mostly to certify the content of noble metals —such as platinum, gold, silver and in some nations, palladium. In a more general sense, the term hallmark can also be used to refer to any distinguishing mark. BIS Hallmark.
Silver hallmarks - Wikipedia
https://en.wikipedia.org/wiki/Silver_hallmarksOne of the most highly structured hallmarking systems in the world is that of the United Kingdom, (Scotland, England, Wales and Northern Ireland), and Ireland. These five nations have, historically, provided a wealth of information about a piece through their series of applied punches. Since 2015 visually identical UK Hallmarks are being struck in India and Italy by sub-offices of Birmingham & She…