2141 1920 Compania Colombiana de Navegacion Aerea multicoloured publicity label w/o opt, showing a biplane & several flags, LL marginal with inscription "Curtiss The International Sky Word" in black at left & "Curtiss" in blue at bottom. Superb fresh UN. Sc footnote. 2010 Scheller photo-cert (P) $200 $400
2142 1920 "Compania Columbiana de Navigacion Aerea" 10c brown red Sea & Mountain, Cliffs & Lighthouse, 2nd printing, blk of 6 with 2 stamps placed sideways. F-VF UN as issued. SG 139-149 cat £510+ as singles, Yv 11, 13 cat €480+ as singles. (6) (P) $200 $300
