Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 35:
1918 (August 1), Vienna-Lemberg (Lwiw) Pioneer Flight postcard, franked by 1.50k/2k lilac, 2.50k on 3k ocher and 4k gray, overprinted ”FLUGPOST”, complete set of three on white paper, ”2.VIII.18” arrival ds, mostly VF, Est. $200-$250,Scott #C1a, C2d, C3a
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