George IV (1820-1830), Uniface Trial Halfcrown, 1824, by W. Wyon, in Barton’s metal, second bust left (cf. ESC 639; cf. S 3809). A few surface marks and hairlines, otherwise good extremely fine, extremely rare £900-1,200

Slabbed in NGC holder, graded PF62. The slab indicates that the coin was once in the H.M. Lingford collection, but the absence of any ticket with the coin means that the association with Lingford is unproven