COLOMBIA, 1921, "Valor 30 Centavos" on 50c Pale Green, Black Air Post Surcharge (Colomphil 21, 21a, 21b; Scott C20 vars).
Three examples, normal from pos. 1 with positioning pinhole at top left, Colomphil No. 21a showing distinctive short "A" in "Centavos" and No. 21b showing different "T" in "Centavos" and sheet margin at bottom, each with violet Medellin three-line handstamp, small faults, mostly minor thins, Fine-Very Fine appearance, scarce trio of stamps, No. 21b with only four used recorded
Image Magnifier / Download
Power Search for Comparables