1939, zehn Luftpostbriefe mit guten Frankaturen, dabei Europaflug Nord, Pro Aero Meldeflug, Ballonpost, Sonderflug "Zürich-Genf" etc.

1939, 10 air mail letters with good frankings, as well Europe flight north, Pro aero reporting flight, balloon mail, special flight "Zurich-Geneva" and so on.

1936, 12 Flugpostbriefe mit guten Frankaturen, u.a. Mi. 233, 293b

1936, 12 air mail letters with good frankings, among others Michel 233, 293 b

1941 - 1943, sechs Luftpostbriefe, dabei Sonderluftpost "30 Jahre Alpenflug" (SLK 43.1), Pro Aero 1941, Sonderflug Bouchs-Payerne etc.

1941 - 1943, 6 air mail letters, as well Special airmail "30 years alps flight" (SLK 43.1), Pro aero 1941, special flight Bouchs Payerne and so on.

1940, sieben Luftpostbriefe mit guten Frankaturen, dabei Erstflug "Locarno-Barcelona", Sonderluftpost Nationalspende und Rotes Kreuz (SLK 40.2a,d,m,p) etc.

1940, 7 air mail letters with good frankings, as well first flight "Locarno Barcelona", Special airmail National contribution and Red Cross (SLK 40.2 a, d, m, p) and so on.

1944, 7 Luftpostbriefe, dabei u.a. 4 Sonderflugbelege "Zürich-Bern-Lausanne-Genf" mit allen Etappen, teils nach Deutschland mit Wehrmachtszensur, tadellose Erhaltung

1944, 7 air mail letters, as well among others 4 special flight records "ZURICH-BERN-LAUSANNE-GENEVA" with all stages, partly to Germany with armed forces censorship, faultless condition

1929, 4 Luftpostbelege, dabei 3 Bundesfeierkarten mit Schweizer-Ballonpost "Landung bei Tegerfelden" (SLK 29.6) und Flugpostbrief mit Einzelfrankatur Mi. 234x "Genf-Basel", je tadellos

1929, 4 airmail documents, as well 3 Federal celebration cards with Swiss balloon mail "Landing by Tegerfelden" (SLK 29.6) and airmail cover with single franking Michel 234 x "Geneva Basle", always in perfect condition