1929, red surcharge ''50 Cts. 50'' on 10c green, block of four, excellent centering and very fresh, full OG, NH, VF and rare multiple, only 100 stamps were surcharged, C.v. $2,800 as hinged singles, Est. $1,500-$2,000 (Image)

1929, two Pioneer Flight covers, first one on line Quito- Ibarra, franked by complete set of ten with Airplane overprints on Official stamps, the other one - Guayaquil-Valparaiso, franked by four values, appropriate markings, mainly VF, Est. $150-$200 (Image)

1939, First Bolivarian Games, 5c-2s, complete air post set of five, blocks of four, full OG, NH, VF, C.v. $183.40 as hinged singles, Est. $100-$150 (Image)