1930 (27 Oct) registered and flown cover from Leningrad to Germany, where 2m and 4m Zeppelin adhesives were added and cancelled by "Dornier Flugschiff 30 Jan 31 D29" strike, with additional boxed cachet, bearing Rio de Janeiro (22.6.31) and additional "DoX Primero Voo Europa-America do Sul Estados Unidos" diamond shape handstamp, v.f. (Image)

Est.$500

1931 (19 Sep), "Europa", registered and flown cover from Leningrad to Oakland, variously franked (5 stamps) in combination with United States (5c Beacon, single on front and horizontal pair on back of the cover), cancelled "U.S. Ger Sea Post S.S. Europa" (Sep 21), Berlin transit and special red cachet (applied on both sides), fine and scarce Russia-USA Catapult combination (Image)

Est.$750

1933 (29 June), "Bremen", envelope sent Registered from Leningrad to New York, variously franked (3 stamps) in combination with Germany (6 stamps), special cachet in green, Berlin June 30 and New York July 9 arrival datestamps on reverse, fine (Image)

Est.$400

1933 (24 Sep), "Bremen", cover sent Registered to USA, variously franked (6 stamps) in combination with Germany (7, three on reverse, actually comprising of single, two tete-beche pairs, one horizontal gutter pair), Berlin transit cachet in red, special cachet in black and New York Oct 2- 3 datestamps, fine and attractive Russian-German combination for cover flown from Leningrad, via Berlin and Koln, then forwarded via the S/S "Bremen" and catapult flight to New York (Image)

Est.$400