Cover franked with 1931 700rs reddish violet 'Industry' issue and 1933 3500rs blue, green & yellow AIR issue (SG 398 & 530) tied by RIO DE JANEIRO cds's dated 8. VIII. 1933. Flown on the fourth 'Sudamerikafahrt' with circular 'Zeppelin' cachet in purple on front. Addressed to GERMANY with green FRIEDRICHSHAFEN arrival cds on reverse. (Sieger #224A)