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- The assay office marks – from left to right, the leopard's head of London, the anchor of Birmingham, the Yorkshire rose of Sheffield, and the castle of Edinburgh. The assay office marks are no longer an indicator that an item was assayed in the city, or in the UK. (en)
- Offshore hallmark used by Birmingham Assay Office's subsidiary in India. Precious metal objects assayed and marked outside of the UK must carry a mark which distinguishes them from items assayed in the UK. (en)
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