| Aerophilately, Flight and Zeppelin Covers |
| Aviation |
| Dornier Do X, Flown Covers/Cards (3) |
| Military Airplanes - WW-II, Dornier (3) |
| Zivile bis WK-I (2) |
| Aviation, Airmail |
| Catapult Mail, North Atlantic Route (12) |
| Glider Mail (1) |
| International Airmail till 1951 (1) |
| International Airmail till 1952 (1) |
| Pioneers (1) |
| Aviation, Balloons |
| Balloons, Balloon Mail (2) |
| Aviation, Gliders |
| Gliders, Glider Mail (4) |
| Aviation, Rocket Mail |
| Rocket Mail, Forerunner (2) |
|