Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1109:
GREAT RANGE OF TYPE 2: 1918, 435 mostly mint perforated and imperforate stamps (132 – used), including 27 strips of five and 28 blocks of four or six, representing 38 inverted and one double overprint, numerous overprint shifts and several errors of basic stamps, full/large part of OG or used, F/VF, ex-Dr. Seichter and Dr. Zelonka, C.v. $845++, Est. $400-$450, Bulat #1096-119, var
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