Airmail cover franked with 1927 pair 50rs on 10rs black & slate and strip of three 300rs on 600rs black & reddish violet AIR overprint issue, 1929 3 x 300rs light blue 'Santos Dumont' AIR issue and 1931 200rs + 100rs green 'Revolution' issue (SG 441, 446, 471 & 494) all tied by CORREIO AEREO RIO cds's dated 4.VIII 1931 with large diamond 'DOX PREMEIRO VOO EUROPA - AMERICA DO SUL ESTADOS UNIDOS 1931' first flight cachet in black on front. Flown on the Rio de Janeiro - Northern Brazil flight. Addressed to USA with NEW YORK arrival cds on reverse. (Muller #118)