Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 147:
1938, 2nd Trans-Polar Flight, 20k gray black, imperforated single with enlarged margin at bottom and nice margins at other sides, typical gum wrinkles, full OG, NH, VF, C.v. $950, Est. $400-$500 , Sc. #641a
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