What is a Hallmark?
A Hallmark:
• Consists of a series of marks applied to the articles of precious metals
• Means that the article has been independently tested
• Guarantees that it conforms to all legal standards of purity (fineness)

A complete hallmark consists of three compulsory punch marks:
• Sponsor's (or maker's, manufacturer's or name) mark
• Metal and fineness (purity) mark
• Assay Office mark

The Goldsmiths' Company Assay Office also applies two optional marks
• Date mark
• Traditional fineness mark.

The UK Hallmarking Act (1973) states that it is an offence for any person, in the course of trade or business, to describe an un-hallmarked article as being wholly or partly made of precious metal(s) or to supply un-hallmarked articles to which such a description is applied.
All silver items purchased from Fired Works are tested and marked at the London Assay office.