Watch List notes:

COINS, EUROPEAN TERRITORIES, ISLE OF MAN George III (1760-1820), Gilt-copper Proof Halfpenny, 1798, restrike by W J Taylor with Soho dies, draped bust right, rev Triune, edge plain, die axis ↑↑ (Pr 32B; S 7416c; KM 10). Mint State, some very light handling marks.
ex Dr R Caine collection of the Isle of Man, Spink Auction 145, 14 July 2000, lot 2745

Estimate: £300-400