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Birmingham Assay Office launches hallmarking app
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Birmingham Date Letters 1773 to 2012 - SMP Silver Salon Forums
Silver Hallmarks « Island Bagpipe
Silver hallmarks
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London Date Letters
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English silver marks: marks and hallmarks of Birmingham sterling silver
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Birmingham Date Letter Chart - Online Encyclopedia of Silver Marks, Hallmarks & Makers' Marks
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York Date Letter Chart - Online Encyclopedia of Silver Marks, Hallmarks & Makers' Marks
Hallmarks for gold, silver and platinum, manufacturer marks and Dating
280 Antique Markings including Pottery and Silver ideas | pottery marks, pottery, antique knowledge
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Anatomy of a Hallmark - Assay Office
