Lot 30577 – 1920, March 11. Commercial cover to Barranquilla, franked by two 10c

1920, March 11. Commercial cover to Barranquilla, franked by two 10c green, each tied by « CCNA/Agencia de Cartagena » oval hs, paying the national postage with 1c, four examples, of which one defective and not detracting, as well as single 2c, tied by « Correo Aéreo./Cartagena-Colombia. » cds’s. Only five covers are recorded from this flight, this being unique as carried at double rate. Cert. Bortfeldt (2007). Ex Gebauer and Toro Pinzón.