William and Mary (1688-1694), 1694, proof in silver, conjoined busts right, king with short hair, rev. Britannia seated left (from a punch used for Charles II), no stop after britannia, edge plain, 30mm, 10.93g/6h (BMC 609). Fair to fine, extremely rare £300-£400

This lot was sold as part of a special collection, Pattern and Proof Halfpence from the Paul Cattermole Collection.

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Spink Auction 265, 10 December 2019, lot 216