1930 (10 Sep) USSR Russia Airmail Zeppelin cover, Sieger # 85Ba , Graf Zeppelin flight from Moscow to Friedrichshafen  franked w. 95k,:  SG.575A, perf 12½ + 15k on 1r, SG.419, each tied with black special flight cancel Sieger 85Ba, Friedrichshafen roller cancel on reverse.