1927 (14 Oct) registered and flown cover from Moscow to Berlin, attractively franked with 15k single and 3x10k (Airplane over Map of the World), fine-v.f., with appropriate flight cachet and arrival pmk (15 Oct) on back (Cat No. C10-11) (Image)

Est.$250

1931 (4 May) registered first flight picture postcard franked on both sides, red "Leningrad-Berlin" first flight cachet, with Berlin arrival pmk, v.f. (Image)

Est.$150

1932 Polar Year, set of two used on specially printed cover and card, used from Franz Josef Land via Archangelsk to Berlin, v.f. (Cat No. C34-35) (Image)

Est.$150

1932 Polar Year, set of two used on flown cover and card, used from Franz Josef Land via Archangelsk to Moscow, v.f., with arrival pmk (Cat No. C34-35) (Image)

Est.$150

1934 (20 Oct) registered cover from Moscow to Germany, attractively franked with 80k Transport Plane and 5k Balloon, with Berlin arrival pmk on back (Image)

Est.$200

1934 (20 Oct) registered cover from Moscow to Germany, attractively franked with 20k surcharge, 15k and 30k Airship "Lenin", v.f., with Berlin arrival pmk on back (Image)

Est.$250