Silver Hallmark IdentifierSilver Hallmark Identifier · Updated October 26, 2026
925 Silver Marks: What Sterling Silver Stamps Mean
A 925 stamp normally describes sterling silver: 925 parts silver in every 1,000 parts of alloy, or 92.5%. Read the surrounding marks before deciding what the stamp tells you about an object.
Read 925 as a proportion
The number is a fineness notation, not a year or a maker’s name. A 100-gram object made entirely from 925 alloy contains approximately 92.5 grams of silver. That calculation changes if the measured weight includes stones, a steel blade, filling or other non-silver parts.
Illustrative typography, not a photograph of an official punch. Stamp shapes and layouts vary.
Is a 925 stamp a full UK hallmark?
Not by itself. A modern UK hallmark needs a sponsor’s mark, a fineness mark and an assay office mark. The traditional lion passant and date letter are optional, so their absence alone does not disprove a modern hallmark. Rules and conventions differ by country and period.
| Clue | What it can tell you | What it cannot prove alone |
|---|---|---|
| 925 | Claimed fineness of 925 parts silver per 1,000 | That the item was independently tested or is solid silver |
| Sterling | A description associated with the 92.5% standard | The country, maker or authenticity |
| UK sponsor mark | The registered person or business that submitted it | Necessarily the individual craftsperson |
| UK assay office mark | Where the article was tested and marked | Where it was designed or manufactured |
925, sterling and the lion passant
These clues are related but not interchangeable. “925” is the millesimal fineness number. “Sterling” is a name for the 92.5% standard. The lion passant is a traditional UK symbol for sterling silver and is now optional. A full UK hallmark may include the numerical fineness without the lion. See the UK hallmark visual guide for how the marks fit together.
What if the mark says sterling?
“Sterling” describes the same 92.5% standard, but it is not automatically a UK hallmark. The word appears under other countries’ marking traditions. Record the exact word, number, symbols and shield shapes, then consider the item’s likely country and period. A nearby letter is not automatically a date mark.
Can a 925 stamp be fake or appear on plated silver?
Yes. A stamp is evidence to investigate, not a chemical test. Plated goods can carry numbers or words that resemble purity marks, and a genuine-looking stamp can be copied. Check the full group of marks, wear, construction and provenance. If authenticity affects a purchase or insurance decision, ask a qualified appraiser or assay office to examine the object.
Three useful checks before buying
- Photograph the whole item, then the entire group of stamps. A clear view of adjacent marks is more useful than a close-up of the number alone.
- Compare the type of object with the claimed description. Check whether the seller’s weight includes components that are not silver.
- Ask for provenance or an expert assessment when authenticity affects the price. A photographed stamp cannot establish metal composition by itself.
Does 925 tell you its value?
It gives a starting point for estimating silver content. Use the sterling silver calculator with the relevant metal weight and a current spot price. Craftsmanship, condition and collectibility can change resale value independently of metal content.
Reference
British Hallmarking Council guidance explains fineness and hallmark interpretation. See the marks and numbers guide for comparisons with other silver grades.