George III (1760-1820), Pre-1816 issues, Proof Penny, 1797, bronzed, edge plain, 24.00g/12h (BMC 1109; Selig –; Adams –; S 3777). Minor marks and striking flaws on rims, otherwise virtually as struck, rare (£400-450)

Rather light in weight: most late Soho proofs weigh between 27.5 and 28 grams