1927 Registered air mail envelope franked Internat. Avio Post Conference 10k (3, all 3 with minor plate errors, one Mi 326III) + 15k bearing MOSCOU 14.9.27 cds to Berlin, at back div. transits, from the Phil.Assoz./Glueck correspondence, very fine (Image)

1936 Airmail cover to Vena franked Stratosphere 20k + 1934 airs 20k +1934 Zeppelins 10k+20k + defin. 1R blue bearing VOZDUSHNAYA POCHTA LENINGRAD - BERLIN 31.5.36, slight toning otherwise very fine & scarce cover, Standard 343,352,377,379,241, Zverev & Gilmanov 347,356,381,383,244, Mi nos.455,464,484,486,392 (Image)