Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 150:
1931, mixed franking registered postcard franked by two Soviet adhesives, delivered by Pioneer Flight on line ”Leningrad-Berlin” (September 25 -26), tied by Leningrad special marking, bearing Berlin Luftpostamt cachet in red and transit date stamp, upon arrival to the East Coast of Colombia uprated by two stamps and posted on SCADTA Flight ”Buenaventura- Cali” (boxed marking of October 20), VF, Est. $150-200, Sc. #392, 430
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