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Thursday, January 04, 2007


A hallmark is a quality control mark placed on an article made of precious metal. Sometimes called a hall, assay or standard mark. It is usually applied after accurate independent testing by an assay office. In the United Kingdom, there are four Assay Offices which are legally empowered to test precious metal objects, and to apply a hallmark to them. These offices are in London, Sheffield, Birmingham, and Edinburgh.

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