Russia, 1931, Zeppelin Moscow-Friedrichshafen Flight. Cover franked with perf 12½ Zeppelin issue + 10k surcharge imperf airmails, all tied by special Moscow Zeppelin 10-IX-30 cancels, with straight line 2-line black flight cachet and Friedrichshafen receiver on reverse, fresh and Very Fine. Sieger No. 85.Ba) (no photo). Scott No. C7 + C13  Estimate $100 - 150. $0