1868, 10 C. proof with 4 margin lines. (Image)

1870, 1. C red, proof with four margin lines. (Image)

1883, 5 C. arms inscript "ESTADOS UNIDOS", proof on carton paper. (Image)

1889, registered letter from BARRANQUILLA to East India with blue french ship mark "LIGNE D PAQ. FR No.3" on front and british Seapost mark on reverse. The envelope ist franked with 10 C "R" label and horizontal pair 5 Centavos. (Image)

1902/04, BARRANQUILLA, 1902, 1 Peso printed both sides ( inverted on reverse), unique example !, the printing on reverse is misplaced, not as heavy inked as on front, but clearly visible, Sc.219var., SG 236var. ÷ 1902/04, Barranquilla 1 Peso violettbraun mit zusätzlichem (schwächerem) rückseitigen, kopfstehenden Druck, Pracht. (Image)

1932, SCADTA airmail issue with overprints 'CORREO AEREO' complete set in blocks/4 incl. registration stamp (14 blocks), mint never hinged and a rarely offered set in this condition, Mi. € 1.434,-- + 100% for ** (Image)

1950, airmail issue LANSA (Lineas Aereas Nacionales Sociedad Anonima) complete set in used blocks/4, scarce blocks, Mi. € 520,-- + (Image)

1950, country scenes airmail issue with opt. 'L' (Lansa) complete set in blocks/4, mostly mint never hinged with a few stamps lightly hinged, Mi. ~ € 480,-- + (Image)

1859-1999: Fantastic, MNH, mint hinged and used collection Colombia and departments 1859-1999 in fat blank album, in which also proofs, sheetparts, varieties etc. Especially the classic part is impressive, with much scarce and expensive material. (Image)