Watch List notes:

(x) PCGS PR64 | George IV (1820-1830), Proof Crown, 1821 SECUNDO, laureate head left, rev. St. George and Dragon, date in exergue, WWP under broken lance, 6h (L&S 10; Bull 2312; ESC 247; Spink 2805), a small carbon spot by horse's rump, otherwise handsomely cabinet toned with bluish flare before portrait and below truncation, a desirable Proof of Record with the correct regnal year, practically as struck, in PCGS holder, graded PR64 (Cert. #82298656) [Joint Finest Certified] (Tied 1 of 5).
https://www.pcgs.com/cert/82298656
Estimate: £8000 - £10000