Lot 421. George VI (1936-1952), Uniface Reverse Mint Error Striking of a Halfcrown, 1951, 4.87g (cf. ESC 798D; cf. Spink 4106), a most unusual error whereupon the flan split horizontally, with a prestigious pedigree, a bolder very fine.ProvenanceColin Adams, Spink 177, 1 December 2005, lot 803 [part] Estimate: $60 - $100