George VI (1936-1952), Proof Half-Sovereign, 1937, by Paget and Pistrucci, bare head left, rev. St George and Dragon, edge plain, 4.00g, 12h (W&R 442; Schneider II, 673; Spink 4077), brilliant, practically as struck Provenance From the Quinn Collection Purchased UBS (Geneva), 18 March 1991 - CHF450 NGC PF64 CAMEO (Certification #5879377-012) https://www.ngccoin.com/certlookup/5879377-012/64/