George III (1760-1820), Pre-1816 issues, Restrike Pattern Halfpenny, 1790, by W.J. Taylor from dies by J.-P. Droz, in bronzed-copper, laureate bust right, rev. Britannia seated left, edge plain, 6h (BMC 1007 [R 20]; Selig 1352). Brilliant mint state £300-360

Slabbed in NGC holder as ‘ex Boulton Family’, graded PF66 BN