Watch List notes:

The Hardcastle Collection | PROOF 64 BROWN CAMEO | George III (1760-1820), Proof Penny, 1806, in copper, 'Late Soho', laureate and draped bust right, rev. Britannia seated left, edge obliquely grained, 19.09g, 12h (Peck 1329; S.3780), lovely mirror-like surfaces with an iridescent toning and a somewhat patchy, underlying patina, in NGC holder, graded PF64 BNC (Cert. #5878624-013).

Estimate: £150 - £250