Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2
Lot 728:
1964, 2nd Parliamentary and Scientific Conference, 1.80s black and emerald, imperforated right sheet margin horizontal pair, full OG, NH, VF, ANK #1182U, €800 as singles, Est. $250-$300, Sc. # 726 imp
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