The Goldsmiths' Company Assay Office

The Goldsmiths' Company Assay Office in London (also known as Assay Office London or the London Assay Office) is the oldest assay office in the United Kingdom. The company has provided hallmarking services since The Goldsmiths Company was founded in the 14th century. The company received its royal charter in 1327 and ranks fifth in order of precedence of the 12 great livery companies of the City of London.


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