Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1240:
Description
1918, black, violet or red overprint (type 2gg) on perforated stamps of 4k-70k and imperforate of 5k-5r, set of 19, full/large part of OG, VF, many expertized, ex-Dr. Zelonka, C.v. $435++, Est. $200-$250, Bulat #549/62
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