U.S. & Worldwide; The Alexander Collection of Russia
September 14-16, 2010
| Images | Description | Current Bid |
 | Lot #334 COLOMBIA Air Post 1918 2c carmine, overprinted "1er Servicio Postal Aereo 6-18-19", v.f. and used on special flight cover from Barranquilla to Puerto Colombia, usual filing fold away from the stamp, signed Diena etc. (catalogue value for used off cover)  Catalog #C1 Catalog Value $1,600 | Price Realized $700.00 |
 | Lot #335 COLOMBIA Air Post 1921 flown cover from Bogotá to Girardot, franked with 10c on 50c green, v.f., with departure and arrival pmks Catalog #C18 | Price Realized $450.00 |
 | Lot #336 COLOMBIA Air Post 1930 Simon Bolivar, 30c on 1p, triple surcharge, h.r., minor vertical gum bend, v.f., signed Kessler * Catalog #San.125b | Price Realized $450.00 |
 | Lot #337 COLOMBIA Air Post 1932 5c-5p, complete set, blocks of four, usual dried gum, fine-v.f. (Catalogue value for singles)  *Catalog #C83-95 Catalog Value $960 | Unsold |
 | Lot #338 COLOMBIA Air Post 1932 Correo Aereo, 1p blue, imperf. sheet margin single, l.h., few toned spots, v.f. and rare, only 25 printed, signed Kessler * Catalog #San.135a | Price Realized $230.00 |
 | Lot #339 COLOMBIA Air Post 1932 Correo Aereo, 1p blue, imperf. sheet margin block of four, few toned spots, hinged in margin, v.f., signed. Only 25 printed, possibly the only imperf. block of four extant *Catalog #San.135a | Price Realized $900.00 |
 | Lot #340 COLOMBIA Air Post 1948 1p, 2p and 5p large die proofs in various colors, also die proof showing central vignette of "Biblioteca Nacional Bogotá" in black, little toning, mostly v.f. P Catalog #C160/63P | Price Realized $750.00 |
