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| | Gold Hallmarks.. |
 | | The Leopard's Head is the mark of the London Assay Office and has been in continuous use since 1300, when the Wardens of the Company were given responsibility for marking gold and silver wares, which passed assay, with the King's mark of the Leopard's Head. |
 | | But the Date Letter indicating the year of hallmarking, which had been in use from 1478, is now a voluntary mark, as are the traditional fineness symbols, the Lion Passant for 925 Silver, Britannia for 958 Silver and the Orb for 950 platinum. |
 | | An article cannot be legally described as being of gold, silver or platinum unless it is hallmarked, or the article weighs less than 0.5 grams in platinum, 1 gram in gold or 7.78 grams in silver. |
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