Auction 333-341 Western Australia & Great Britain - Day 3

1858 (Feb.1): 2 d. blue, plate 6, Die I, perf. 16, Alphabet III, wmk. Large Crown, two singles and a horizontal pair, used on cover, London to Hamburg, Germany, dated 23 March 1858, tied by the rare Pearson Hill Experimental 'Duplex' Machine cancel in black, First Trial (Type I), Machine 'C', Code 'C' (Day Code B), with 'P.' oval in red alongside. Rare; according to the collector, the only recorded example of this Trial cancel on cover.