Watch List notes:

BRITISH COINS, Ireland, George IV, Proof Halfpenny, 1822, copper, edge plain, 6h (S 6624; KM. 150). Brilliant and virtually as struck, attractive patina, rare £400-500

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Provenance: St James's Auction 34, 21 September 2015, lot 270.

Slabbed in NGC holder, graded PF 64 BN