Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Mexico - Zeppelin Flight - 1936 (May 20-23), Hindenburg 2nd North America Return Flight registered cover to Germany, franked by five values, tied by Mexico City Special Servicio Aereo ds, appropriate labels, NYC''5.20.1936'' connection and Frankfurt ''23.5.36'' arrival markings on reverse, mostly VF, Sieger #411D, C.v. €650, Est. $400-$500, Scott #C65/C72