Germany 1933, Century of Progress Flight Friedrichshafen to Chicago, Mi.496, 497 and 515, tied by "Bad Gandersheim-Roswithastadt-Luftkurort 11.10.33" cds, Friedrichshafen Transit cancel 14.10.33, on registered envelope, usual flight cachet, backstamped Chicago Oct 26, very fine (Sieger 238Bc)

Germany 1933, Century of Progress Flight Friedrichshafen to Chicago, Mi.496, 497 and 515, tied by "Pforzheim-Brötzingen 9.10.33" cds, Friedrichshafen transit cancel 14.10.33, on registered envelope, usual flight cachet, backstamped Chicago Oct 26, Albany Oct 28, very fine (Sieger 238Bc)

Germany 1933, Century of Progress Flight Friedrichshafen to Chicago, Mi.497, 381 and 522, tied by Friedrichshafen 14.10.33, usual flight cachet, backstamped Chicago Oct 26, very fine (Sieger 238Bc)

Germany 1933, Century of Progress Flight Friedrichshafen to Chicago, Mi.498, tied by Friedrichshafen 14.10.33, usual flight cachet, backstamped Chicago Oct 26, very fine (Sieger 238Bc)

Germany 1933, Century of Progress Roundflight via Sevilla to New York, Mi.498, tied by Friedrichshafen 14.10.33, usual flight cachet, backstamped (poor) Sevilla and New York Nov 14, very fine (Sieger 238Ca)

Germany 1935, 100th Ocean Crossing, Mi.455, 486, 586 and 587(pair), tied by "on board" 15.9.35 cds, usual flight cachet, very fine (Sieger 321)

Canada 1936, First Hindenburg Return Flight via New York to Hamburg, registered cover with colourfull franking, tied by Montreal May 8 cds, usual flight cachet, backstamped New York May 9, Frankfurt 14.5, Berlin 14.5 and Hamburg 15.5 cds, very fine (Sieger 409G)

Canada 1936, Second North America Flight, registered cover without flight cachet to Frankfurt, 6c Airmail stamp, two on the front (also 4 c King orange) and nine on the back, tied by Montreal May 18 cds, backstamped New York 19.5 and Frankfurt 23.5.36 arrival pmk., very fine (Sieger 411C)

El Salvador, LZ129 Hindenburg, Third North America Flight, El Salvador to Germany with Salvador-franking and "1er Despacho"- flight cachet, very fine (Sieger 419)