Watch List notes:

George III (1760?1820), Pattern Halfpenny, 1799, struck in gilt?copper, early Soho, small laureate and draped bust right, K. on shoulder, flaw in drapery, rev inverted die axis, Britannia seated left, flaw near armpit, middle prong of trident to left of first limb of N, date below, edge grained (Peck 1233 KH16; S 3778). As struck. Encapsulated by NGC as Proof 64 Cameo.