Peru 1928 (Oct. 22): PRIMER CORREO AEREO PERU-ECUADOR-COLOMBIA, Envelope from Paita to Barranquilla franked with 'PE.' overprinted Scadta 1923 issue 10 c. and 20 c. tied by large special cachet without date, together with national postage 1924/29 10 c. orange red and Postal Tax 2 c. violet, cancelled "CORREO 2 PAITA OCT 22 28" with Scadta Barranquilla arrival mark of Oct. 25 on reverse. (Image 1) (Image 2) (Image)