Cover franked with 1929 2 x 25c on 2c carmine AIR surcharge issue (SG 119) tied by CRISTOBAL cancel dated OCT 8 1929. Flown on the extension of the FAM 5 route Cristobal - Argentina first flight with illustrated first flight cachet on front and arrival cds on reverse. A scarce flight only 143 covers were carried. (AAMC #CZ43, Muller #26)