The Royal Mint Museum uses cookies to ensure we give you the best experience on our website.
If you continue to use our website we assume that you are happy to receive these cookies. Find out more

Trial plates and weights

From the start of coinage, accuracy of weight and composition has been vital for its integrity and the confidence of the public. In the Royal Mint Museum this aspect of coinage is represented by standard weights from the 16th century onwards and by a spectacular series of gold and silver trial plates dating from 1477, these plates being the officially approved standards against which the composition of coins can be independently checked by comparative assay.

Browse highlights of the trial plates and weights collection below.