Lot 10944 – 1931 (August-Sept.) Zeppelin 1st South America Fli

1931 (August-Sept.) Zeppelin 1st South America Flight, reg’d cover to Germany franked by 3 & 4P Zeppelin set in horiz. pairs, tied by triangular cachets (with other franking), set issued 22 August and showing double circle date/hour cancel on reverse thus First Day usage, sent via Condor plane to join the Zeppelin en route, with F’hafen (7.9.31 bs), with reg’d label and final bs of Speyer on back as well, fine and scarce (only 187 flown) (Sieger 126, € 500)