AIR MAIL and ZEPPELIN Switzerland

Quality: ✉

26.4.1934 SWISSAIR Balkan Flight cover sent to Athens, Greece on the second leg of the flight, bearing two 75rp airmail stamps (SBK F11, cat. value CHF 150 on cover), departure delayed due to adverse weather conditions, arrival postmarks on both front and back as well as a postla label applied by the Greek Postal service on the front, scarce, vf