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Los 746

Thom overprint in black 2 d. orange, die I with watermark reversed, S22, imperforated, corner block of 6, the upper stamps and sheet margins with hinge remainders, the 3 lower stamps unmounted mint, vertical perforation slightly split between the 1st and 2nd row, otherwise fine; a unique multiple, ex T.E. Field, certificate Hamilton-Bowen BPP (2020)