Watch List notes:

(g) George III (1760-1820), 'Spade' Guinea, 1790, edge smoothed flat, 8.23g, 12h (Farey 1290; EGC 833; MCE 394; Spink 3729), removed from a lunette mount with resultant concavity, brightness and sweating to surfaces, otherwise struck details fair.

Estimate: £400 - £450