1930, Austria, 2 x 15 gr airmail-stamps and 1 S definitive on registered airmail cover from WIEN, 17.II.30, to Cali in Colombo. The cover was carried by airmail Paris-Cherbourg, directed to the United States with additional franking USA 5 C airmail stamp for the flight New York to Miami, subsequently Scadta 2 x 15 C deep green and 20 C carmine registration stamp together with block of four Colombia 1 C green definitives were tied on transit by cds Barranquilla, 14.III.1930, and finally reached destination with arrival mark Cali, 20.III.1930. Very unusual and scarce cover in F/VF condition. (Image)

1928, Cover with 5C, 10C + 15C handstamped "PE" (black) in combination with 2C. + 10C Peru used on First Flight Cover "Peru-Ecuador-Colombia" from PAITA to Barranquilla, arrival pmk. backside, tone spots (Image)

1921/1923, Pictorials "DE COLOMBIA", 5c. orange, 10c. slate, 20c. brown, 30c. green, 50c. blue, 60c. vermilion, six values each as complete sheet of 25, unmounted mint (few with slight traces of adhesion). Michel nos. 10/11, 13 a, 14/16 - 3.020,- € for hinged.

1928, Registration stamp 'SERVICIO DE TRANSPORTES AEREOS EN COLOMBIA' 20c. grey with opt. 'R' in red in a lot with 300 stamps mostly in complete (folded) sheets, fine MNH and scarce, Mi. 40a, € 1.800,-- for mint hinged + 100% for MNH (= € 3.600,-- +)

1923, Great Britain "GB", black machine overprint on 30c. blue, 1.600 mint stamps within units/sheets (many job numbers "I.996.22" stamp and "3362.23" overprint), adhesion marks/melted gum structure. Michel no. L 618 (1.600), 12.000,- € (plus premium for job numbers)

1923, used and mint assortment of apprx. 170 stamps mainly bearing various country overprints (chiefly machine and a few handstamps), slightly varied condition, interesting lot for the specialist! (Image)