1930 (Sept.) Zeppelin Return Flight, Moscow-F’hafen, two postal cards with add’l franking, one incl. 40k Zeppelin, other scarce ordinary franking only,…

1931 1R Polar Flight imperf strip of 5, CTO, two folds between stamps, very fine (Mi. € 300)

1931 (July 25) Zeppelin Polar Flight, reg’d cover to Moscow franked by complete PERFORATED special issue tied by Leningrad pictorial ds, « …Leningrad-Nordpol »…