George III (1760-1820), Pre-1816 issues, Proof Penny, 1806 (early Soho), in gilt-copper, edge centre-grained, 18.81g/12h (BMC 1321 [KP 29]; Selig 1299; Adams 50; S 3780). A few minor surface marks, otherwise extremely fine, rare £400-500

Provenance: DNW Auction 63, 7 October 2004, lot 477