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

Wenden

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Start price: $750

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1893, 2k black green and red, right sheet margin example with inverted center (green and red colors), full OG, LH, VF and very rare, Z. Mikulski certificate stated that only about 30 were existed and only a few survived after Russian Revolutions, Est.$1,000-$1,500, Scott #L11d var