Watch List notes:

The Hardcastle Collection | PROOF 64 RED-BROWN | Ireland, George III, Proof Halfpenny, 1805, in copper, Soho, laureate and draped bust right, rev. crowned harp, edge obliquely grained, 8.75g, 6h (DF 597; S.6621), proof with a couple of tiny spots , flan flaws on edge, reverse lightly gritty, a lovely iridescent toning, much as struck, in NGC holder, graded PF64 RB (Cert. #5878624-018) [Tied 1 of 4 / 3 Finer].

Estimate: £150 - £250