Watch List notes:

George III (1760-1820), Proof Halfpenny, 1806, by Kulcher, late Soho, struck in copper, laureate and draped bust right, raised K. on striated truncation, rev. Britannia seted left, edge lightly grained, 9.42g, 12h (BMC 1360; Selig -), lustrous, extremely fine, rare.

Estimate: £400 - £500