1918 2c carmine, overprinted "1er Servicio Postal Aereo 6-18-19", v.f. and used on special flight cover from Barranquilla to Puerto Colombia, usual filing fold away from the stamp, signed Diena, etc. (catalogued as used off cover) cat. $1700 (Cat No. C1) (Image)

Cat. $1700, Est.$750

1920 10c "Woman and Boy Watching Plane", unused without gum as issued, h.r., large balanced margins all around, beautiful colors, fresh, v.f., signed Kessler, etc. Only 38 unused examples have been recorded (Compania Colombiana de Navegacion Aerea was founded September 28, 1919. In February 1920, the C.C.N.A. obtained a franchise to fly between Cartagena and Barranquilla and was authorized to issue its own stamps. This was facilitated by overprinting Compania Colombiana de Navegacion Aerea Porte Aereo and surcharging $ 0.10 on the Curtiss Aereo Plane & Motor Co. advertising labels. Less than 100 of each of the nine types were produced. These stamps were used on two first flights on February 22, 1920 from Cartagena and returning March 4 from Barranquilla. In July 1920, the air mail concession was passed to SCADTA. The C.C.N.A. ceased to operate in April, 1922) cat. $3000 (Cat No. C2) (Image)

Cat. $3000, Est.$2,000

1920 10c Tilted plane viewed close-up from above, unused without gum as issued, h.r., large margins and bright colors and fresh, v.f. Only 31 unused examples recorded, cat. $4500 (Cat No. C3) (Image)

Cat. $4500, Est.$2,500

1920 10c Fuselage and Tail of Biplane, large margins all around, tied by oval SCADTA handstamp on part of cover addressed to Cartagena, v.f., signed Champion (catalogued as used off cover) cat. $2500 (Cat No. C7) (Image)

Cat. $2500, Est.$2,000

1920 10c Plane at Rest, unused without gum as issued, large margins all around, typical plate crack at lower left, minor marginal thins and vertical crease, otherwise fine, signed Roger Calves, JAG. Brun, etc., with 2011 Raybaudi certificate. A rare unused stamp, only 41 recorded, cat. $4500 (Cat No. C9) (Image)

Cat. $4500, Est.$1,500

1920 10c Ocean Liner, large margins all around, used with 3c Government franking on cover from Cartagena to Barranquilla, light departure in oval and arrival datestamp on back, v.f., signed Bolaffi and Diena, with 1963 certificate, cat. $2000 (Cat No. C10) (Image)

Cat. $2000, Est.$1,500