Watch List notes:

William IV (1830-1837), Bronzed Proof Halfpenny, 1831, bare head right, W. W. on truncation, rev. Britannia seated right, edge plain, 9.69g, 6h (Pywell-Phillips 557; BMC [Peck] 1463; Spink 3847), choice, a lovely example, about mint state, , 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 Whichever reaches higher hammer price will sell and the other option will be withdrawn..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 PF66 BN (Certification #5880299-007) [Top Pop ~ Joint Finest]
, https://www.ngccoin.com/certlookup/5880299-007/66/
Estimate: £200 - £300