Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 229:
1929 (October 2), 4th Switzerland Flight pre-printed postcard (view of Hamburg), franked by two Eagle Air Post values, ”2.10.1929” on board cancellation, Bern the same day arrival marking, VF, Sieger #39c, €330, Est. $150-$200 , Sc. #C29-30
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