Registered cover franked with 1933 strip of three 1p 50c emerald & blue and 1933 22p 50c yellow brown 'Zeppelin' issue (SG 460 & 454) tied by SCIO AEREO POSTAL PARAGUAY cds dated 14. 10. 1933 and also by various 'Zeppelin' cachets with printed registration label on reverse. Flown on LZ 127 on the South American - Chicago flight, Paraguayan acceptance. Addressed to USA with transit and arrival marks. Very scarce. (Sieger #240)