Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Germany - Zeppelin Flights - 1924 (October 12-15), Airship Z.R.3 America Flight, 6 postal history items, postcard and cover originated from Friedrichshafen and 4 items from Augsburg, Charlottenburg, Halle and Stuttgart, appropriate franking and violet oval confirmation cachet, F/VF, Sieger #20a, b, Est. $300-$400