Watch List notes:

(g) George III (1760-1820), 'Spade' Guinea, 1791, Large 9, fifth laureate head right, rev. crowned 'Spade' shield, edge obliquely milled, 8.38g, 12h (Farey 1300; EGC 719; MCE 395; Spink 3729), rubbed to centres, but with an appealing reddish tone to peripheries, otherwise good fine / almost very fine, in Royal Mint box of secondary issue.

Estimate: £450 - £550