Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 2085:
TYPE 1 (MULTIPLE HANDSTAMP) ON PERFORATED STAMPS: 1918, black overprints on 1k-70k, complete set of 16 in strips of five, full OG, NH or LH/hinged, F/VF, ex-Dr. Zelonka, C.v. $728 as single stamps, Bulat #661-76
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