Watch List notes:

Mint Error - Mis-Strike a blank flan in gold in an NGC holder labelled '(1974-1979) G.Britain Gold Conservation Series Planchet (33.3 g - 33.3mm diameter) MINT ERROR, plain edge, the planchet for the popular Conservation series from the 1970s, issued for many different, mostly Commonwealth countries

Estimate: 1500-2000 GBP