BALUG 1st flight 1920 | Michel-No. Erstflug 20.8 01 | Cover/Card
BALUG 1st flight 1920 - Frankfurt to Lörrach special 1st flight postcard "BALUG" with airmail mixed postage and postmarks from " Karlsruhe 11.11.20 ", because of an emergency landing near Kandern, Lörrach wasn' t reached by plane, a very rare offer, Michel airmail handbook 20.8 01
1st flight Zurich to Frankfurt 1926 | Michel-No. Erstflug 26.49 03 | Cover/Card
1st flight Zurich to Frankfurt 1926 - very rare 1st flight postcard with nice mixed postage sent by airmail from Zurich to Frankfurt (red airmail arrival mark), very good quality, Michel airmail handbook 26.49 03
Zurich to Lausanne airmail 1919 | Michel-No. Handbuch RF 19.1 b | Cover/Card
Zurich to Lausanne airmail 1919 - 1st flight of regular air traffic in perfect needs quality, high value postage and sent by registered mail from Zurich to Lausanne (airmail postmark as arrival postmark), a rare offer with backside Liniger signature, airmail handbook RF 19.1 b
Genf to Lausanne airmail 1919 | Michel-No. Handbuch RF 19.1gg | Cover/Card
Genf to Lausanne airmail 1919 - postcard sent from Genf 6.VI.19 with very good postage via Lausanne to Zurich, then by railroad to Vienna, perfect needs quality, airmail handbook RF 19.1 gg SpF
Basle to Frankfurt airmail 1920 | Michel-No. Handbuch RF 20czII | Cover/Card
Basle to Frankfurt airmail 1920 - 30 Cents rare propeller airmail stamp for the airmail line Basle to Frankfurt with additional postage on illustrated letter sent with postmarks 11.III.21 by railroad to Frankfurt, certificate by Rellstab, airmail handbook RF 20 cz II
1st flight Genf to Montlucon 1929 | Michel-No. Michel WZ 23 B x | Cover/Card
1st flight Genf to Montlucon 1929 - rare 1st flight letter with also rare Tell combination and with arrival postmarks backside, certificate by Bohler, SBPV