Watch List notes:

(x) NGC SP66 | *Finest Certified* | George V (1910-1936), Specimen 'Rocking Horse' Crown, 1935, .500 Fine Silver Proof, bare head left, rev. St George and Dragon, incuse lettered edge, 12h (Bull 3652; ESC 376; Spink 4049), a pearlescent gem with mint bloom subtly overtaking the handsome surface brilliance, choice FDC, in NGC holder, graded SP66 (Cert. #3590004-016) [*Finest Certified*] (Tied 1 of 4).
https://www.ngccoin.com/certlookup/3590004-016/66/
Estimate: £250 - £350