Watch List notes:

XF40 | George III (1760-1820), Guinea, 1773, third bust, no stop after III, edge chevron milled, 8.31g, 7h (Murdoch III, 92[b]; Schneider II, -; MCE 378; S.3727), some rub, very fine, in NGC holder, graded XF40 (Cert. #5878606-009).
https://www.ngccoin.com/certlookup/5878606-009/40/
Estimate: £400 - £600