George III (1760-1820), Pre-1816 issues, Restrike Pattern Halfpenny, 1799, by W.J. Taylor, in bronzed-copper, laureate bust right, rev. Britannia seated left, edge plain, 12.11g/6h (BMC 1260 [R 79]; cf. Selig 1397). Brilliant mint state £400-500

Provenance: With envelope inscribed ‘from Boulton descendants via Spink’