Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - United States - Zeppelin Flights - 1930 (May 18-June 6), South America Round Flight cover, franked by Zeppelin stamp of $2.60 blue, tied by Varick St. Sta ''APR.21.1930'' ds, German and American confirmation cachet, Lakehurst ''MAY.31.1930'' arrival marking, VF, Sieger #64H, C.v. €900, Scott #C15