AIR MAIL and ZEPPELIN Switzerland

Quality: ✉

1.7.1926 First Flight Basel - Schaffhausen on the occasion of the International Inland Navigation and Hydropower Exhibition in Basel, two official illustrated postcards each bearing the vignette issued for the exhibition (SBK 18, cat. value CHF 50 on cover), tied by special rimless cachet, in addition to the normal airmail frankings cancelled by the flight cachet, vf