U.S. and Worldwide Stamps & Postal History
March 17-18, 2015
| Images | Description | Current Bid |
 | Lot #232 COLOMBIA Air Post 1919 2c carmine rose, unused with dried gum, well centered, strong color, faint toning on reverse, otherwise v.f., pencil signed, with 1950 Philatelic Foundation Certificate. This stamp was issued for the First Experimental Air Mail Flight from Barranquilla to Puerto Colombia and back, by the American aviator William Knox Martin, June 18, 1919. For this, 200 copies of 2centavo stamps were overprinted at Barranquilla Printing Office. This was executed in horizontal strips of ten, which were severed with a guillotine knife, causing horizontal perforations to have a "cut" appearance. Of the total stamps issued, 160 were used on covers on the special flight (YT PA1, cat. €5,000) * Catalog #C1 Catalog Value $3,500 | Price Realized $1,500.00 |
 | Lot #233 COLOMBIA Air Post 1919 Barranquilla overprint, used June 18 on a "Tabletas Bayer Aspirin" advertising picture postcard with pre-printed "Bi-Plano C-1324" and "W.Knox Martin" (pilot) inscriptions in red, picture side with a special Inaugural Air Service handstamp, card unfortunately defective and strengthened with tape, also bearing a special 1932 Ministry of Post cachet, stamp v.f., extremely rare on card (most were affixed on covers) signed Kessler, Oriol, Calves etc. (catalogue value for used stamp),  Catalog #C1 Catalog Value $1,700 | Price Realized $900.00 |
 | Lot #234 COLOMBIA Air Post 1920 10c Clouds and Small Biplane, unused without gum as issued, v.f., with 2004 Rendon certificate, (*) Catalog #C3 Catalog Value $3,800 | Price Realized $1,900.00 |
 | Lot #235 COLOMBIA Air Post 1920 10c Tilted Plane Viewed From Above, unused without gum as issued, minor corner crease which could be trimmed away, v.f., (*) Catalog #C4 Catalog Value $4,600 | Price Realized $1,800.00 |
 | Lot #236 COLOMBIA Air Post 1920 10c Lighthouse, unused without gum as issued, full margins all around, few light wrinkles, otherwise v.f., (*) Catalog #C6 Catalog Value $3,000 | Price Realized $1,400.00 |
 | Lot #237 COLOMBIA Air Post 1920 10c Condor on Cliff, unused without gum as issued, margins just touching at left as often, few small thins, otherwise fine and rare, (*) Catalog #C8 Catalog Value $11,000 | Price Realized $1,400.00 |
 | Lot #238 COLOMBIA Air Post 1921 (10 Nov) flown cover from Medellin to Bogota, franked with 30c on 50c surcharge (uncancelled), along with regular franking, boxed Medellin datestamps, v.f., with Bogota arrival postmark Catalog #C20 | Price Realized $450.00 |
 | Lot #239 COLOMBIA Air Post 1921 Handstamped in black "Valor 30 Centavos" on 50c green, surcharge inverted, right margin block of four, surcharge double on lower left stamp, few slight gum adhesions, some gum toning and right stamps creased, otherwise fine and very rare, signed Bloch (catalogue value for regular stamps)  *Catalog #C20var Catalog Value $3,700 | Price Realized $1,800.00 |
