Watch List notes:

William IV (1830-37), Proof Halfpenny, 1831, in bronzed copper, bare head right, w.w. incuse in block capitals on truncation, rev. inverted die axis, Britannia seated right, national emblems in exergue, edge plain, 9.51g (BMC [Peck] 1463; S.3847), a trace of cabinet friction to high points and some inconsequential carbon spotting to periphery, otherwise good extremely fine, scarce.

Estimate: £250 - £350