Ivanov Collection of Russia; Matuzas Collection Of Lithuania; U.S. & Worldwide
September 7-8, 2011 and September 13-15, 2011
| Images | Description | Current Bid |
 | Lot #7331 COLOMBIA Air Post 1920 cover franked with 10c green, used in combination with 3c government franking (uncancelled), 10c tied by special "Compania de Navigacion Aerea" cachet on first flight from Barranquilla to Medellin, some minor cover stains, still fine  Catalog #C11 | Price Realized $700.00 |
 | Lot #7332 COLOMBIA Air Post 1921 2p imperf. plate proofs in ultramarine and brown red, also additional pair of last, the former with small stain, otherwise v.f. P Catalog #C33P | Price Realized $230.00 |
