Registered cover franked with 1929 1c blue, 5c bright violet and 10c deep emerald 'Official' issue and 1929 5c on 20c yellow brown, 10c on 50c vermilion and 15c on 1p emerald' AIR' overprint issue set of three (SG O259, O261/2 & 262/4) all tied by PRIMER VUELO TEGUCIGALPA - TELA - MIAMI cds's dated OCT 7 1929. The flight was delayed by PAA and eventually flown from Tegucigalpa via Tela to Miami on the 17th October. Addressed to CANAL ZONE with arrival cds dated OCT 17 on reverse. A rare flight. (Muller #24, rated 1750pts)