Watch List notes:

(g) MS61 | George IV (1820-1830), Sovereign, 1825, type 2, bare head left, rev. crowned garnished shield, edge milled, 7h (Stratos 124; Marsh 10; MCE 476; S.3801), lustrous, extremely fine, the reverse struck with a polished die, in NGC holder, graded MS61 (Cert. #5878626-003) [Tied 1 of 10 / 14 Finer].
https://www.ngccoin.com/certlookup/5878626-003/61/
Estimate: £800 - £1,000