Lot 10868 – 1931 (July 24-27) Zeppelin Polar Flight pc with 4

1931 (July 24-27) Zeppelin Polar Flight pc with 4 stamps tied (2.80Fr total franking) tied at Triesenberg (20 July) and sent via F’hafen (July 24) to the Icebreaker “Malyguin” (27 VIII 31 pictorial receiver) addressed to Basel (27.VIII.31 receiver – a month later!), two diff. 2-line s/l private cachets plus official cachet, scarce and very fine (Sieger 119, € 250)