1929, world round flight, handing in for transport Friedrichshafen, circuit to Friedrichshafen, letter with 2 RM and 4 RM Zeppelin, always two pieces, and 2 M. Buildings, decorative fixed, from "FRIEDRICHSHAFEN airmail 15. AUG 29" to Ohrdruf with arrival postmark Friedrichshafen from 4. September and all corresponding Cachets, a 2 RM. Corner tooth perforation crease lower right, the rest in perfect condition, additional franking defects, cover in of the upper right corner compressed and trace of glueing left, despite the small restrictions attractive and not frequent document