Watch List notes:

George III (1760-1820), Spade Guinea, 1798, fifth laureate head, rev. crowned Spade shield, edge chevron milled, 8.36g, 12h (Spink 3729; MCE 402; Schneider II, 612; Stratos 110), spectacularly choice mint state, in NGC 'Sweetnam' holder, graded MS65 (Cert. #5878636-001).
provenance
Purchased Spink, May 1975 - £225
Estimate: £800 - £1,200