Lot 91110 – 1931 Polar Zeppelin Flight 1M, 2M and 4M on separate Zeppelin flight covers

1931 Polar Zeppelin Flight 1M, 2M and 4M on separate Zeppelin flight covers; the 1M with 10pf & 20pf on 3rd South America flight cover to Argentina, 2M single franking with “ÖHRINGEN / ZEPPELINTAG” cds and 4M single franking on Polar Flight cover with red cachet and “BRRISE-GLACE MALYGUIN” cds, a very fine trio (Mi. €1’300 off cover).