1857 DIE II PL. 49 (SG40) BLOCK OF 6 USED ON COVER LONDON TO CARSHALTON. 1860 envelope London to Carshalton with block of 6 die II plate 49 pale rose red on white paper lettered AE AF AG BE BF BG, slight perf separation, tied London 'W20' numerals with London back stamp DE 24 60. Several stamps showing constant varieties. Unusual multiple on cover. (Ref 56975).
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