COLOMBIA airmail cover 1919 Barranquilla to Puerto Colombia

COLOMBIA airmail cover 1919 Barranquilla to Puerto Colombia with the scarce first airmail stamp of Colombia. The cover is signed by Diena and Bolaffi and a certificate of Robson Lowe 1970. A stamp with the forged overprint is added for reference

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COLOMBIA luchtpost brief 1919 Barranquilla naar Puerto Colombia met certificaat. Schaars