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

Imperial Russia

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Start price: $50

Buyer's premium:

1919, 3.50r maroon and green, perforation 13½, block of four, horizontal varnish bars are missing, full OG, NH or VLH (top stamps), VF, Est. $75-$100, Sc. # 137b