British and World Coins

Elizabeth II (1952-2022), Decimal issues, Trial 50 Pence, undated, on a twelve-sided cupro-nickel flan, numerical mark of value both sides, edge plain, 29mm, 13.18g/12h; together with a struck twelve-sided cupro-nickel blank, edge plain, 29mm, 13.18g [2]. Virtually as struck, extremely rare £150-£200

Spink Auction 140, 16 November 1999, lot 583 (part); Joanna Tansley Collection, DNW Auction 67, 28 September 2005, lot 431; DNW Auction 75, 26 September 2007, lot 590