Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Austria - Zeppelin Flight - 1929 (April 23-25), Mediterranean Sea Flight two postcards to Sweden and Spain, franked by three or six values, both tied by Vienna ''19.IV.29''ds, Friedrichshafen connection and red flight cachet, the last one dropped in Seville ''24.ABR.29'', Sieger #24 var, Seville drop is not listed, Frost #127-19, C.v. $1,200, in addition 3 newspaper clippings about Austrian Flights, Est. $500-$600, Scott #C12/27