Listings in Hallmarking/Assaying

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Goldsmiths' Hall, Gutter Lane, London, London, Greater London EC2V 8AQ, United Kingdom
The Goldsmiths’ Company Assay Office is where hallmarking began, and we have been testing and hallmarking precious metals for over 700 years. Our reputation for excellence in hallmarking, service, and support is both revered and unparalleled.
Guardian's Hall, Beulah Road, Hillsborough, Sheffield, Sheffield, Yorkshire S6 2AN, United Kingdom
HISTORY INTEGRITY INNOVATION There has been an Assay Office in Sheffield since 1773, when local silversmiths successfully petitioned Parliament for the right to assay silver in Sheffield.