1922-24 collection of 19 covers and cards, written-up on pages (in German), with First Air Post stamp used with additional franking on registered (not flown) cover from Moscow to Berlin, others including Konigsberg-Moscow and return, Moscow-Smolensk-Berlin, another with German franking Berlin-Konigsberg-Smolensk-Moscow; Berlin-Danzig-Konigsberg; Leningrad-Moscow-Berlin, London to Moscow; Berlin via Konigsberg-Smolensk-Moscow to Peking, China, also a card with similar routing, unused single and block of four of C1, etc., fine-v.f., interesting group of covers (Image)

Est.$1,000

1922-25 selection of 118 mostly flown and registered covers to France, Switzerland, Germany, England, generally "Mit Luftpost Befordert Konigsberg", others endorsed "Vosdushnaya Pochta" or handstamped, different rates and routes, mostly with Inflation franking, Soviet Stamps, occasional first flights (Image)

Est.$5,000

1924 (16 July) registered cover from Kiev to Kamenetz-Podolsk, franked with regular issue and pair of Air Post surcharges, used in combination with Air Defense League 100r on 10r surcharge, fine and attractive combination, with arrival pmk (Image)

Est.$150

1925 (16 Sep) registered and flown cover from Tashkent to Berlin, franked with the complete set of surcharges and used in combination with 5r and 50r Air Post Semi-officials, v.f., with arrival pmk (Image)

Est.$500

1927 (19 Sep) registered and flown cover from Moscow to Paris, franked with 10k (rounded corner perf) and 3x15k, fine-v.f., with arrival pmk (Cat No. C10-11) (Image)

Est.$250

1932 (7 July) Mattern & Griffin special dispatch cover from Moscow to USA, via Pacific Ocean, cover franked with pair of 20k and block of four of 10k Airships, canceled by Moscow 7.7.32 cds, addressed to Wooster, Ohio, fine and rare flight cover (Bennett Griffin and James Mattern tried to break the round-the-world record set by Post and Gatty. They left New York in their "Century of Progress," airplane on July 5, 1932 for Harbor Grace, Newfoundland. They crossed the Atlantic to Ireland and continued to Berlin for the first successful non-stop flight from Newfoundland. After departing Berlin, when they were near Borisov, Russia on July 7, 1932 a cabin latch fell off damaging the vertical stabilizer. They made a forced landing and had to discontinue their efforts to break the round-the-world flight record) (Image)

Est.$1,000

1932 International Polar Year, 50k and 1r used on specially prepared flown cover and card, each canceled 26 Aug (First Day of Issue) Franz Josef Land, with Archangelsk transit and Berlin arrival pmks, triangular cachets, v.f. (Cat No. C34,35) (Image)

Est.$150

1932 International Polar Year, 50k and 1r used on specially prepared flown cover and card, each canceled 26 Aug (First Day of Issue) Franz Josef Land, with Archangelsk transit and Berlin arrival pmks, triangular cachets, v.f. (Cat No. C34,35) (Image)

Est.$150

1933 (29 Aug) registered and flown cover from Leningrad to Austria, attractive franking, with Leningrad-Berlin Air Post cancels, red Berlin forwarding cachet, minor cover flaws with backflap missing, fine (Image)

Est.$150