Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Gibraltar - ZEPPELIN FLIGHT : 1933 (October 14-17), Chicago Zeppelin Flight registered cover on shoulder from Germany to Brazil, franked by two stamps, Berlin-Friedrichshafen connection (on reverse) and confirmation markings in red, Pernambuco ''17.X.33'' arrival ds, VF and scarce, Sieger #238, €850++, Est. $350-$400, Sc. # 84, 97