Germany 1930, South America Flight, Friedrichshafen to Lakehurst, Mi.438 and 439(vertical pair), tied by Friedrichshafen 18.5.30 cds, usual flight cachet, backstamped Lakehurst May 31 Zeppelin cancel, very fine (Sieger 57N)

Germany 1930, South America Flight, Picture post card "Round Trip" Flight, Mi.438 and 439 tied by Friedrichshafen 18.5.30 cds, German and US flight cachets and Friedrichshafen 6.6.30 arrivel cds, very fine (Sieger 57P)

Germany 1930, South America Flight, postcard "Round Trip" Flight, Mi.438 and 439 tied by Friedrichshafen 18.5.30 cds, German and US flight cachets and Friedrichshafen 6.VI.30 arrivel cds, very fine (Sieger 57P)

Germany 1930, South America Flight, "Round Trip" Flight, Mi.439 single and a pair tied by Friedrichshafen 18.5.30 cds, German and US flight cachets and Friedrichshafen 6.6.30 arrivel cds, very fine (Sieger 57P)

Germany 1930, South America Flight, "Round Trip" Flight, Mi.439 in vertical strip of three, tied by Friedrichshafen 18.5.30 cds, German and US flight cachets and Friedrichshafen 6.VI.30 arrivel cds, very fine (Sieger 57P)

Germany 1930, South America Flight, Berlin - Lakehurst, Mi.438, 439, 364 and 382, tied by Berlin 19.5.30 cancels, backstamped Lakehurst May 31 Zeppelin cancel, very fine (Sieger 57U)

USA, First return Europe Pan America - Round Flight. 65c (Scott C13) on German Zeppelin picture postcard (8 and 10 pf imprint), tied by Lakehurst cds, usual flight cachets, Friedrichshafen arrival 6.6.30, very fine (Sieger 64F)

Germany 1930, Germany Flight Hamburg - Berlin (22.6), Mi.423 tied by Hamburg cds and three different red cachets to Decin 24.VI.30 Tetschen a.d. Elbe, very fine (Sieger 68Dc)

Finland to Germany Flight, Zeppelin 1930 overprint stamp in pair, tied by Helsinki 24-IX-30 cds, usual flight cachet, backstamped Friedrichshafen 25.9.30 on fine cover (horizontal crease). (Sieger 89B)

Liechtenstein 1931, Vaduz - Lausanne Flight, commercial cover bearing 1 and 2 Fr. Zeppelin stamp, tied by red flight cachet, Vaduz 10-VI-36 and Lausanne 10-VI-36 cds alongside, very fine (Sieger 110C)

Iceland 1931, Iceland Flight, Mi.147 and 149, 30Aur and 2 Kr., tied by Reykjavik 30.VI.31 cds, on registered envelope, usual flight cachet, to Cottbus, Germany, backstamped Friedrichshafen 3.7.31 and Cottbus 4.7.31 cds, very fine (Sieger 114D)

Iceland 1931, Iceland Flight, Mi.147 and 149, 30Aur and 2 Kr., tied by Reykjavik 30.VI.31 cds, on registered envelope, usual flight cachet, to Chemnitz (addresse erased), backstamped Friedrichshafen 3.7.31 and Chemnitz 4.7.31 cds, very fine (Sieger 114D)

Iceland 1931, Iceland Flight, Mi.147 and 149, 30Aur and 2 Kr., tied by Reykjavik 30.VI.31 cds, on registered envelope, usual flight cachet, to New York, backstamped Friedrichshafen 3.7.31 and New York arrivel cancel 14.7.31, very fine (Sieger 114D)

Iceland 1931, Iceland Flight, Mi.147 and 149, 30Aur and 2 Kr., tied by Reykjavik 30.VI.31 cds, on registered envelope, usual flight cachet and one-liner "Graf Zeppelin" in red, to Berlin, backstamped Friedrichshafen 3.7.31 and Berlin 4.7.31, very fine (Sieger 114D)

Germany 1931, Polar Flight, Mi.456, 1M red, on postcard tied by Friedrichshafen 24.7.31 cds, Leningrad 25.VII.31 receiver alongside, usual flight cachet, very fine (Sieger 119B)

Germany 1931, Polar Flight, Mi.457, 2M blue, tied by "on board" 24.7.31 cds, Leningrad 25.VII.31 receiver alongside, on imprinted Air Mail cover from H.E.Sieger, addressed to Lobenstein/Thüringen 28.7.31 pmk,. very fine (Sieger 119B)