Watch List notes:

(g) NGC PF62 UCAM | William IV (1830-1837), Pattern Proof Two-Pounds, 1831, by W Wyon and Merlen, bare head right, rev. crowned shield in mantle, edge plain, 15.86g [245.2grns], 6h (W&R 258; Murdoch III, 438; King 206; Stratos 172; Marsh T20; EGC 1016; Spink 3828), a remarkably high relief striking with die capping to rims at 3 to 4 o'clock, nevertheless an extraordinarily beautiful coin, with nigh-flawless cameo frosting across Wyon's 'six week' portrait of the Sailor King in rich contrast to brilliant and subtly orange-tinged fields, a tiny die flaw at nape of neck in otherwise quite unblemished fields, practically FDC, a quite imperious coin!, in NGC 'St Helier' holder, conservatively graded PF62 ULTRA CAMEO (Cert. #6684100-006).
Provenance
The St. Helier Collection of English Gold Coins,
Spink, by private treaty, 12 September 1963 - £200.0.0
, ,
https://www.ngccoin.uk/certlookup/6684100-006/62/

Estimate: £15000 - £20000