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Pioneer SCADTA Flight October 3-29, 1931, cover from Leningrad to Cali (Colombia) via Berlin, Colombian stationery envelope 4c blue, franked by seven Soviet adhesives and sent by registered airmail on line"Leningrad-Berlin" on October 3, then forwarded by sea to Buenaventura, upon arrival to Colombia (10.27) posted to SCADTA flight to Cali (10.29), after arrival uprated by two stamps and tied by Cali ds, address partly erased, still VF
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