Lot 560
Mexico, Airmail, 1929, 25c green & blue, perf 12, trial color proof, in combination with Airmail, 1929, 5c olive green & sepia + 1923, 5c orange, block of four and single (C5+637) on registered airmail cover to San Antonio, Texas, tied by "Servicio Aereo, Mexico, 12 Jul, 29" cds's, flight cachets and registry etiquette on reverse, Very Fine, On May 3, 1929 various proofs were sold at the Mexico post office for collectors (225 in all), however many were later used, these seldom come for auction, this cover was last sold in 1995. Scott No. C3 var.Sanabria No. 14 Estimate $750 - 1,000.
Realized: $900