Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 730:
1990, definitive issue, Flag 40c blue gray, vertical imperforated pair of coil stamps, full OG, NH, VF, C.v. $275, Unitrade C.v. CAD$375, Est. $100-$150 , Sc. #1194Cg
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