Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3
Lot 1429:
1902-16, 6k grayish green, complete sheet of 25, full OG, hinged at top margin, stamps are NH, VF, not listed in Chuchin, Schmidt #25, C.v. $625 as hinged singles, Est. $400-$500
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