Watch List notes:

George III (1760-1820), Fourth Issue, Gilt Proof Penny, 1806, in gilt copper, 'Late Soho', laureate bust right, K • on truncation, rev. Britannia seated left, holding olive branch and trident, ship in left field, centre grained edge, 18.80g, 12h (BMC [Peck] 1325 [KP 31]; Spink 3780), some wear to the higher points and contact marked in otherwise brilliant fields, about extremely fine.

Estimate: £500 - £600