Colombia 1920 Scadta Consular Service Overprint

Colombia · 1920 · 10c

This stamp is part of the first airmail series issued by the private company SCADTA (Sociedad Colombo-Alemana de Transportes Aéreos). It features a green overprint 'Servicio Consular' on the base 10-centavo stamp, which depicts a seaplane over the Magdalena River. This overprint designated the stamp for use on mail originating from Colombian consulates abroad.

SCADTA operated the world's second airline and pioneered airmail services in Colombia, a country with difficult terrain. These semi-official stamps were crucial for connecting the nation and its diplomatic missions before the government took over airmail services.