406 1920-32 Colombia SCADTA Airmails collection on pgs. 1920 Sociedad Columbo-Alemana de Transportes inc 4th Oct set 30c & 50c, plus set signed, 1921 New Colours set to 30c, 1921 Pictorials to 5P (SG cat £370+), 1923 New Inscription set to 5P (£110) plus surch 30c/20c & "R" opt 20c. 1929 Pictorial set to 5P plus registration. 1930 Bolivar opt set. General Issues 1923 "EU" -USA opts to 5P. Also range of A, B, F, GB & I opts. 1929 Numeral set to 5P. Almost all diff. F-VF M/MUH/U. SG cat £2200+ = A$3700+. Scarce & seldom offered. (95) (P) $700 $1000
