George III (1760-1820), Pre-1816 issues, Proof Farthing, 1799, in bronzed-copper, edge centre-grained, 7.26g/6h (BMC 1277 [KF 10]; Selig 1430). About as struck, rare £200-£260

Coin is a Proof Farthing (late Soho), BMC 1277 [KF 10], Selig 1430. Revised estimate £200-260