George VI (1936-1952), Trial Farthing, 1951, struck in copper-nickel, edge plain, 2.88g/12h. About as struck, extremely rare £300-£400

this coin and the following lot were acquired directly from a Royal Mint employee at the time

XRF analysis of this coin shows 75.2% copper and 24.5% nickel; this is very similar to the alloy of a copper-nickel Sixpence (75.4% copper, 24.4% nickel)