Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 3

Imperial Russia

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Start price: $100

Buyer's premium:

1870 (March 29), 3k, 5k black and pale lilac, 20k, three stamps on horizontally laid paper, used on cover from St. Petersburg to Marseille via Paris, transit (14.4) and arrival (15.4) ds on reverse, F/VF, Est. $150-$200, Sc. # 20, 22 var, 23