1931, Polar travel, board mail to Leningrad, special delivery card with 1 RM. Polar travel and 50 Pfg eagle with on board confirmation mark "airship Count Zeppelin 25.7.31" to Bremen with arrival postmark, arrival Leningrad from 25. July and Corresponding Cachet, the 1 RM. Two shorter perforation at the bottom on the right, otherwise in good condition, not frequent mode of dispatch