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

Poland - Russian Imperial Issues

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Start price: $100

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1871 (April 30), 10k brown & blue (Sc. #23), used on entire wrapper from Szydlowiec to Warsaw, tied by ”1097” in dotted truncated triangle, Szydlowiec 30. April. 1871 two- line ds, red next day arrival marking on reverse, mostly VF and scarce usage, Est. $200-$250