AIR MAIL and ZEPPELIN Switzerland

Quality: ✉

31.5.1925 Geneva International Aviation Meeting lot of 3 official postcards each showing one or two triangular vignettes issued for the occasion (SBK nos. 13-15, cat. value CHF 50 on cover each), in addition to the normal frankings tied by the special flight cachet, one card sent to Basel and the other two sent to Paris, vf