Cover franked with 1933 2c carmine & 1c orange TAX issue both with blue 'Signature' overprint plus 1929 15c violet AIR issue (SG 779, 813 & 629) all tied by LEON cds's with 'Correo Aereo OF. DE LEON' marking alongside. Sent airmail to USA with octagonal CORREO AEREO DESPACHADA PAA MANAGUA dated transit mark on front.