Cover franked with 1930 25c on ½c brown and 1930 5c deep purple, 15c scarlet, 20c yellow, 25c yellow green and 50c grey blue 'Airmail' issue (SG 226 & 244/248) tied by CORREO AEREO LA PAZ cds's dated 30 JUL 1930. Flown on the LA PAZ - RIO DE JANEIRO, BRAZIL first flight by LLOYD AEREO BOLIVIANO & CONDOR. Addressed to RIO DE JANEIRO with red, yellow & green airmail label, first flight cachet and RIO DE JANEIRO 'CONDOR' arrival cds all on front plus various other arrival cds's on reverse. (Muller #24, rated 2000pts)