Hallmark / Punch
Also: Hallmark, Fineness stamp, Assay mark, Touch mark
A hallmark (German: Punze) is an official or maker\'s assay mark that permanently and tamper-evidently certifies the fineness and origin of a precious metal object.
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A hallmark (from Latin punctum, a punch mark) is a struck or stamped mark on objects made of gold, silver, platinum or palladium. It confirms, officially or by a recognised assayer, that the fineness of the metal corresponds to the stated value. In the English-speaking world this system is called hallmarking – the term derives from London's Goldsmiths' Hall, where precious metal wares have been assayed since the 14th century.
Structure of a Hallmarking System
A complete set of marks usually contains several individual symbols that together provide an unbroken assay history:
| Mark | Meaning | Example (UK) |
|---|---|---|
| Fineness mark | Metal content in per mille or karat | 750 (18 karat gold) |
| Assay office mark | Identifies the assay office | Anchor (Birmingham) |
| Maker's mark / Sponsor's mark | Registered abbreviation of the submitter | Letter punch |
| Date letter | Year of assay (historical, partly abolished) | A–Z per cycle |
| Optional additional marks | Jubilees, imported goods, CCM mark | Crown, orb |
The fineness mark is the most important element: it legally certifies how much pure metal is contained in the piece. In Germany, Austria and Switzerland the most common gold alloys are:
- 333 ‰ (8 karat) – minimum threshold for "gold" in Germany
- 585 ‰ (14 karat) – best-selling jewellery standard in Central Europe
- 750 ‰ (18 karat) – high-quality jewellery and watch cases
- 916 ‰ (22 karat) – classic investment coins (Sovereign, Krugerrand)
- 999 ‰ – fine gold, investment coins and bars
International Harmonisation
The Vienna Convention (CCM, 1972) enables member states to accept a uniform "Common Control Mark" – a scale symbol with fineness indication. Goods bearing this mark may be sold without undergoing a further national assay. The approximately 20 members include Austria, Switzerland, Portugal, Finland and the United Kingdom. Germany is not a CCM member and instead applies its own regulations under the Act on the Fineness of Gold and Silver Wares together with EU standards.
For investment coins, the issuing mint takes on the guarantee function of the hallmark: the Krugerrand carries no classical hallmark because the Rand Refinery, as a state-recognised refinery, itself vouches for the fineness.
Why Hallmarks Matter When Buying
When acquiring jewellery, scrap gold or coins, the hallmark enables a quick initial assessment of material value – even before a device such as an X-ray fluorescence (XRF) analyser is deployed. With the melt value calculator the pure metal value can be determined immediately on the basis of the fineness read from the mark.
If a hallmark is absent or appears to have been struck afterwards, caution is warranted. A further authenticity check – for example by density measurement or ping test – provides clarity. The current gold price provides the reference value for the assessment.
Hallmarking Obligation in Germany and Austria
In Germany there is no statutory obligation to hallmark jewellery – the manufacturer or dealer bears civil-law responsibility for the fineness declaration. Voluntary hallmarking by a recognised assay office, however, creates trust.
In Austria, the Hallmarking Act (1866, most recently amended) requires mandatory hallmarking of gold, silver and platinum articles above certain weight thresholds. The competent authority is the hallmarking office of the Federal Office of Metrology and Surveying (BEV).
In Brief
Hallmarks are the oldest and most reliable system for controlling the fineness of precious metals – a small stamp with major legal effect. Anyone assessing jewellery or scrap gold reads the hallmark first and then calculates the material value.