1934, 4 air mail letters with high-value frankings, among others Michel 190 / 91 x, 233 / 34 x, , as well twice Swissair Balkan flights (SLK 34.3 C) always with additional cancellation \"take-off. Shifted\" \"at the 28. June 1934. To Pfullendorf (emergency landing) \", airmail cover to Dakar and air mail letter to Zagreb Photos of this collection

1932, 10 airmail documents with good franking, as well among others balloon mail Gordon Benett flight \"Basle Ruggel (Liechtenstein) \" and \"Basle Ebracht\" always with confirmation stamp and vignette (SLK 32.7 / 7 a), special flight \"Interlaken Zurich\" (SLK 32.4 b) and so on Photos of this collection