William IV (1830-1837), Proof Shilling, 1831, edge plain, 6h (ESC 1266; S 3835). Brilliant with blue-grey tone £350-400

Provenance: ‘Cheshire’ Collection, Goldberg Auction 31 (Beverly Hills), 30 May-1 June 2005, lot 2645; Goldberg Auction 41 (Beverly Hills), 28-9 May 2007, lot 3378.

Slabbed in NGC holder, graded PF62 Cameo