1930, Russia trip, return flight, card with colorful normal franking without special stamps from MOCKBA 10.9.30 (Moscow, small size, Sieger 100 %) to Münchenbernsdorf with arrival postmark, without special stamp, only red confirmation stamp and arrival postmark Friedrichshafen 11.9.30, very rare, it were only 300 such Postal service pieces transported, of it samples only 20 cards!