Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia and Soviet Union - Pioneer Flights - 1931 (September 25 - October 20), four Soviet adhesives used on mixed franking registered SCADTA postcard sent by Pioneer Flight en route Leningrad-Berlin on September 25, next day Berlin arrival date stamp, forwarded to Colombia by a steamship, Buenaventura ''20. OCT.31'' receiver, two Colombian adhesives were affixed upon arrival, placed on SCADTA Flight to Cali with appropriate label attached, mostly VF, Est. $200-$300, Scott #392, 430