Auction Catalogue
Proving Pieces, Royal Mint, London, Trial Dies (3), all 1957, in bronze, aluminium and plastic-coated steel, similar, dates in centre, 5.56g/12h, 2.79g/12h, 5.05g/12h (cf. Tansley 465) [3]. About very fine and better £80-100
Proving Pieces, Royal Mint, London, Trial Dies (3), all 1957, in bronze, aluminium and plastic-coated steel, similar, dates in centre, 5.56g/12h, 2.79g/12h, 5.05g/12h (cf. Tansley 465) [3]. About very fine and better £80-100
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