Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 3
Lot 1382:
IMPERFORATE HIGH VALUES: 1918, 1r-10r, 71 mint and used (40), singles, pairs, strips and blocks, including 3 inverted, 2 double overprints, pair with and without overprint, four stamps punched at post offices (not counted), generally clean and nice unit, full/part of OG or used, F/VF, ex- A. Popov, Dr. Zelonka, C.v. about $750, Bulat #754-58
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