Welcome to the Goldsmiths' Company Assay Office


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Every Mark Matters

The Goldsmiths’ Company Assay Office is where hallmarking began, and we have been testing and hallmarking precious metals for over 700 years. At the Goldsmiths' Company Assay Office we provide both traditional handmarking and the latest laser marking techniques across three key London locations with a choice of three priority services including one hour, same day and early hall. We process 3 million articles a year, in 100,000 packets, and are proud to apply the leopard's head townmark of London to each and every one. 

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Disclaimer: Price does not include VAT. The Goldsmiths’ Company Assay Office makes every effort to ensure the accuracy of calculations, but will not be held responsible for any subsequent loss or inconvenience. Prices given are indicative only and will depend on registration type, options chosen during packet submission etc.

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Disclaimer: Price does not include VAT. The Goldsmiths’ Company Assay Office makes every effort to ensure the accuracy of calculations, but will not be held responsible for any subsequent loss or inconvenience. Prices given are indicative only and will depend on registration type, options chosen during packet submission etc.

News & Events

Annual Punch Grind 2019

Joanna Hardy and Neil Carson helped to grind the date letters from 86 punches which remained from the total 655 created in 2018 and bore the corresponding date letter "t".  

Date Published: 15 May 2019

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Verdict of the Trail of the Pyx

The Queen’s Remembrancer, Barbara Fontaine, today announced that the Chancellor has passed the annual Trial of the Pyx –  one of Britain's oldest judicial processes – which tests the quality weight, composition and diameter of the coins people carry in their pockets or collect as commemorative coins.

Date Published: 03 May 2019

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