Watch List notes:

Elizabeth II (1952-), Twenty Pence, [c. 2008], the undated mule, edge plain, 5.01g, 12h (S.G4A [4631A]), the first currency coin struck without a date for circulation in Britain since the reign of Charles II, a famous modern rarity, much as struck, in NGC 'Francis' holder, graded MS63 (Cert. #5878644-020).

Estimate: £50 - £80