Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3
Lot 1191:
1937, Alexander Pushkin, 20k blue green, perforation L13¾, unfolded block of four, full OG, NH or hinged (top stamps), VF, C.v. $360 as singles, Est. $150-$200 , Sc. #591D
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