Watch List notes:

(g) George III (1760-1820), 'Military' Guinea, 1813, sixth laureate head right, rev. crowned 'Garter' shield, edge milled, 12h (Murdoch III, - [cf. 158 ~ Proof]; Douglas-Morris 118; Selig 1037-38; King 184; Schneider II, - [cf. 611]; MCE 404; Spink 3730), lustrous, a pleasing extremely fine, ever-popular, this one-year type has experienced a recent and noteworthy surge in collector demand.
NGC MS61 (Certification #5880286-012)
, https://www.ngccoin.com/certlookup/5880286-012/61/
Estimate: £4,000 - £5,000