4c blue postal stationery envelope (H&G B17) used with added 1929 30c grey blue SCADTA issue (SG 60) tied by HONDA SCADTA cds's. Addressed to USA with fine strike of unframed 'Panama - Colombia - Ecuador Use the Scadta Air Mail system Saves about 10 Days Information and Stamps Through Interamerican Aerotravel and Supplies Inc, Broadway 11, New York. N.Y.' American consular agents cachet in blue on reverse with BARRANQUILLA SCADTA transit cds.