Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 53:
1919, Experimental Flight from Barranquilla to Puerto Colombia, black overprint on 2c carmine rose, large part of OG, VF and rare, only 260 stamps were overprinted and no more then 49 remained uncancelled, E. Kessler guarantee hs, Colomphil certificate, C.v. $3,500, Est. $1,600-$2,400, Sc. #C1
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