Is LEOPARDS_HEAD the same as Leopard's Head?

Yes. LEOPARDS_HEAD, Leopard's Head, London Mark all denote the same material — assay-mark. Different markets and eras stamp it differently, but the purity is identical.

How do I confirm a LEOPARDS_HEAD stamp is genuine?

Look at the mark under 10× magnification for crisp, even strikes, cross-check the weight-to-volume ratio against the expected density, scan it with the Jewelry Identifier app, and — when it matters — have an XRF test done by an assay office or gemological lab.

* assay-mark hallmark

The LEOPARDS_HEAD hallmark: meaning, purity & value

British assay office mark: leopard's head (crowned 1478-1821, uncrowned after) indicates London Assay Office (Goldsmiths' Hall, established 1300). Among the oldest hallmarks in continuous use.

Published May 30, 2026

Quick facts

Metal: assay-mark
Common regions: UK

Stamps that mean the same thing

This purity may be struck into jewelry as any of: LEOPARDS_HEAD / Leopard's Head / London Mark. The mark differs by country and era, but the metal content is identical.

What LEOPARDS_HEAD tells you

British assay office mark: leopard's head (crowned 1478-1821, uncrowned after) indicates London Assay Office (Goldsmiths' Hall, established 1300). Among the oldest hallmarks in continuous use.

How to check it yourself

Examine the stamp under a 10× loupe — genuine marks are crisp and evenly struck, not doubled or smeared.
Confirm the mark reads LEOPARDS_HEAD or an equivalent such as Leopard's Head.
Photograph it in the Jewelry Identifier app to read the metal, hallmark, and any gemstones from the image.
For a binding result, have an assay office or gemological lab run an XRF purity test.

Sources

Goldsmiths' Company historical records

* Frequently asked

FAQ

Q. Is LEOPARDS_HEAD the same as Leopard's Head?: A. Yes. LEOPARDS_HEAD, Leopard's Head, London Mark all denote the same material — assay-mark. Different markets and eras stamp it differently, but the purity is identical.
Q. How do I confirm a LEOPARDS_HEAD stamp is genuine?: A. Look at the mark under 10× magnification for crisp, even strikes, cross-check the weight-to-volume ratio against the expected density, scan it with the Jewelry Identifier app, and — when it matters — have an XRF test done by an assay office or gemological lab.

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