Watch List notes:

(g) George III (1760-1820), Pattern Two-Pounds, 1820 LX., by Pistrucci, laureate head right, rev. St George and Dragon, DECUS ET TVTAMEN. ANNO REGNI LX. upwards on edge, 6h (Hawkins 134; Murdoch III, 177-79; La Renotière 30-31; Douglas-Morris 144; Selig 1163; King 195; W&R 179 [R3]; Spink 3784), light hairlines and other minor contact marks, otherwise a brilliant proof of the first Two Pound piece offered in its Bicentennial Year, extremely fine and very rare, with only sixty pieces reportedly struck.
Provenance
From the Hayleigh Collection
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NGC PF62 ULTRA CAMEO (Certification #5879378-007)
, https://www.ngccoin.com/certlookup/5879378-007/62/
Estimate: £20,000 - £25,000