1930 (27 Oct) registered and flown cover from Leningrad, attractive combination franking of Definitives and Commemoratives, sent to Germany, where 2m and 4m Zeppelin adhesives (C37,C38) were added on both sides and canceled by "Dornier Flugschiff 30 Jan 31 D 1929" datestamp, with additional red cachet and Rio de Janeiro (22.6.31) cds, plus framed "DoX Primero Voo Europa-America do Sul Estados Unidos" diamond shape handstamp, fine-v.f. (Image)

Est.US$200

1930 (27 Oct) registered and flown cover from Leningrad, attractive combination franking of Definitives and Commemoratives, sent to Germany, where 2m and 4m Zeppelin adhesives (C37,C38) were added on both sides and canceled by "Dornier Flugschiff 30 Jan 31 D 1929" datestamp, with additional red cachet and Rio de Janeiro (22.6.31) cds, plus framed "DoX Primero Voo Europa-America do Sul Estados Unidos" diamond shape handstamp, fine-v.f. (Image)

Est.US$200

1933 (17 May) cover from Leningrad to Switzerland, franked with five different commemoratives, tied by large departure pmks, with violet "Flugschiff Do.X Passau/Schweiz 1933" cachet, appropriate "Staad 5.IX. 33" postmarks below, red Berlin transit but without the customary German franking added, minor toning, otherwise fine, only 10 carried (Image)

Est.US$500

1933 (7 July) cover from Leningrad to Budapest, franked with five different adhesives, tied by large departure pmks, with violet "Flugschiff Do.X Passau/Schweiz 1933" cachet, appropriate "Staad 5.IX. 33" postmark alongside, with German franking added in Passau, red Berlin transit, additional German franking and violet cachet, Budapest arrival cds, fine and colorful cover (Image)

Est.US$300