Cover franked with 1936 10c carmine and 1942 5c carmine (SG 226 & 327) tied by CORREO AEREO LA SIERRA DE ABANGARES cds in purple. Addressed to SAN JOSE censored on arrival with 'Defensa Continental' censor strip. Also SAN JOSE CARTERO No. 2 and JEFE DE CARTEROS SAN JOSE arrival cds's on reverse.