Lot
1212 
Canal Zone, 1925 (Aug. 10) Colombia Scadta First Flight Covers, two covers, each bearing Colombia, 1923, 30c Blue, Air Post (C42) used with National 3c, tied by "Postal Aereo, Barranquilla, Aug. 10, 1923" double-circle datestamp to Balboa Heights, Canal Zone, violet "Primer Correo Aereo, Colombia-America Central" boxed cachet, Cristobal and Ancon transit backstamps, interesting SCADTA label sealing cover; slight toning, one with 3c stamp tear, F.-V.F. and scarce pair, few covers were carried on this survey flight using Dornier Wal flying boat. Estimate $200 - 300.