COLOMBIA, 1921, "Valor $0.10" on 50c Pale Green, Air Post Surcharge (Colomphil 5; Scott C24C).
Two covers, one with Red and other with Violet surcharges, each with light Girardot oval handstamp, both cancelled by "Navegacion Aerea, Neiva" handstamp with strikes on reverse, Red used with National -1/2c pair and 2c, Violet used with National -1/2c (2) and 1c (2), both addressed to Behr-Heyder in Bogota, Very Fine and attractive pair of covers, these represent two of the nine covers
recorded, only four of which are from Neiva to Bogota via Girardot, Scott $2,000.00
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