Germany, Airmail, 1928, 4m Zeppelin Worldflight Friedrichshafen-Tokio. Franked with 4m Zeppelin, tied by 16.8.1929 On Board cancel, with red Flight cachet and black Osaka receiver, Very Fine and attractive. Michel No. 424. Sieger No. 30.Ba). Scott No. C37  Estimate $100 - 150. $0 (Image)