assay mark
C50993
concept
An assay mark is an official stamp or symbol applied to a metal object to certify its composition, purity, and authenticity after testing.
All labels observed (2)
| Label | Occurrences |
|---|---|
| assay mark canonical | 1 |
| hallmarks | 1 |
Instances (2)
| Instance | Via concept surface |
|---|---|
| leopard’s head | — |
| Rogers family of silver marks | hallmarks |