Commercial airmail cover franked with 1929 2c on 5c blue & black 'Revenue' SURCHARGE issue, 1929 25c brown purple AIR issue with 'Correo Aereo 1929 P.A.A.' overprint and 1928 1c plum TAX issue (SG 609, 614 & 604) tied by boxed CORREO AEREO MANAGUA illustrated 'Airplane' cancels in black dated JUL 3 1929. Addressed to USA. A nice early flown cover, the international airmail service was inaugurated on 15th May 1929.