Cover franked with 1924 5c blue and 1930 15c green AIR issue (SG 201 & 235) tied by COLON cds's in pink dated MAY 4 1930. Flown on the 5th May COLON - MARACAIBO, VENEZUELA first flight with boxed 'CORREO AEREO' marking in red and boxed 'AGENCIA POSTAL DE COLON PRIMER VUELO PANAMA - VENEZUELA' first flight cachet in pink all on front. (Muller #50)