Watch List notes:

William IV (1830-1837), Proof Sixpence, 1831, bare head right, plain truncation, rev. value in wreath, edge plain, 2.77g, 7h (ESC 2501 [1672]; Spink 3836), an evidently early or more probably original '1831 striking' with inverted die axes as customary for currency issues of the period, an even dark tone over reflective surfaces, a trace of friction to reverse, otherwise good extremely fine, the obverse practically FDC, rare, , This lot is also offered as a group lot in lot 280. Whichever reaches higher hammer price will sell and the other option will be withdrawn..
Provenance
The Gemini Collection
, ,
NGC PF63 (Certification #5880299-005)
, https://www.ngccoin.com/certlookup/5880299-005/63/
Estimate: £300 - £400