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Archive Experience: The (not so) secret world of hallmarking - Session one (11:00am)

  • Goldsmiths' Hall, Foster Lane London, EC2V 6BN UK (map)

A test strike of the 2024 combination mark for 925 silver into an aluminium block - © Chris Mann

Hallmarking is one of the worlds oldest continuous forms of consumer protection, and can trace its origins to the reign of Henry II, more than 840 years ago. It offers customers, retailers and the trade assurance that objects made from precious metals have been independently scientifically tested (assayed), and through the marks that are applied (the Hallmark), tells them what an object is made from, when it was made, who sent it to be Hallmarked (the sponsor), and which of the four UK Assay Offices tested and marked it.

On Thursday 23 October 2025 join the Goldsmiths’ Company’s Library and Archive team at Goldsmiths’ Hall – the home of Hallmarking and the London Assay Office since 1478 – to learn about the history, meaning and purpose of the (not so) secret world of hallmarking through objects and documents in their collections, during an exclusive Archive Experience session.

Visitors will come face to face with objects and documents that have played an important part in the living history of Hallmarking, including the earliest surviving register of sponsor marks from 1697, original mark plates from the 1770s, and a selection of historic punches and tools!

This exclusive Archive Experience will be held in the Library Reading Room, capacity is limited to 10 people, and tickets are priced at £25 per person.

Proceeds will go towards ensuring more young people across the UK have free access to vital creative education, through Goldsmiths’ Giving, a charitable partnership between The Goldsmiths’ Company and the National Saturday Club.


Book your tickets for "Archive Experience: The (not so) Secret World of Hallmarking - Session One"

Terms & Conditions

  1. Tickets for “Archive Experience: The (not so) Secret World of Hallmarking” are priced at £25 per person and are non-refundable.

  2. Tickets must be booked in the name of the person who is attending - photo ID that matches the name on the booking will be required to gain entry.

Security & bag policy

Goldsmiths’ Hall operates Airport style enhanced security procedures for all public events - these include a bag scanner and a security arch. Suitcases and items larger than a laptop bag are not permitted inside the building. Our cloakroom, situated downstairs, can be used free of charge for coats, bags and umbrellas.

Disabled access to Goldsmiths’ Hall

The main entrance to Goldsmiths’ Hall is on Foster Lane and may not be suitable for visitors who require step-free access. Those who are require level access from street level should ring the bell on Carey Lane, for assistance and access by lift. If you have any concerns or questions about visiting the building, please email us.

The Library Reading Room is on the first floor, and can be accessed by lift from within the ground floor lobby. 

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4 October

The Three Queens: From Jewellery to Sculpture at Goldsmiths’ Hall

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23 October

Archive Experience: The (not so) secret world of hallmarking - session two (2:00pm)