Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - United States - Canal Zone - Zeppelin Flight - 1930 (May 31 - June 6), South America Flight mixed franking cover to Germany, franked by four values, including three air post surcharges, tied by Cristobal ''MAY 22. 1930'' ds, upon arrival to NYC uprated by Zeppelin $1.30 brown and cancelled on May 29; German and American (type II) flight markings, Friedrichshafen ''6.6.30'' receiver, VF and very rare, only 18 items flown, Sieger #64.II, C.v. €3,000, Est. $2,000-$2,500, Scott #95, C4-5