Cover franked with 1917 5c blue & 10c grey tied by large BARRANQUILLA cds and 1921 50c grey blue SCADTA issue tied by BOGOTA SCADTA cds in red (SG 361/362 & 23). Addressed to BIRMINGHAM, UK with fine strike of boxed 'Use the Colombian Airmail ! It saves you 10 Days ! Information and Stamps Bureau of Information 7, Sicilian Avenue London W.C.1' British consular agents cachet in red on reverse.