Sale 707 The Knapp Collection of Airmail Flights

1929 (Aug 15-Sep 4) Round-the-World Flight, four legs (Michel 29a-32a), three covers and a card, Friedrichshafen to Tokyo, to Los Angeles, to Lakehurst and to Friedrichshafen (the card), all franked with 2m and/or 4m Zeppelins (C36-37) with flight cachets and appropriate backstamps; also includes an unused Japanese postcard of the Zeppelin over Tokyo, Very Fine.
Sieger 30Aa-d; €940 ($1,000).
Michel €245+ ($260).
Estimate $200 - 300.