Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2

Austria

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Start price: $150

Buyer's premium:

1964, 2nd Parliamentary and Scientific Conference, 1.80s black and emerald, top right corner sheet margin horizontal imperforate pair, full OG, NH, VF, ANK #1182U, C.v. €800++,Scott #726 imp