Headed 'AMERICAN CONSULAR SERVICE, Maracaibo' cover franked with 1930 15c grey & 1b slate blue AIR issue (SG 397 & 401) tied by MARACAIBO cds dated MAY 7 1930 with manuscript 'Par Avion' alongside. Flown on the PAA First Flight MARACAIBO - WILLEMSTAD CURACAO, addressed to the American Consul in Curacao with arrival cds on reverse. (Muller #17)