1931 (12 Sep) Berlin to New York picture postcard, "Dampfer "Bremen" New York Deutscher Schleuderflug" cachet, Russian franking added in Leningrad, v.f., with appropriate pmks (Image)

Est.US$250

1933 Leningrad to USA, registered and flown cover with German franking (including three different gutter pairs, one with advertising) added in Berlin, bearing a rare framed, violet "Deutscher Schleuderflug D.'Europa' New York 6/7/August 1933" cachet on reverse, with transit and arrival pmks on back, fine-v.f. (Image)

Est.US$250

1933 Leningrad to USA, registered and flown cover, with German franking (including tete-beche and se-tenant combination pairs) added in Berlin, triangular "D.'Europa' - New York "Deutscher Schleuderflug" cachet, with transit and arrival pmks on back, v.f. (Image)

Est.US$250