Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Bolivia - ZEPPELIN FLIGHT : 1932 (April 9-13), 2nd Return SAF two covers and card from Cochabamba to Germany, franked by 26 (18 - on reverse), 14 or 17 (7 - on reverse) stamps respectively, card has green Flight cachet, Friedrichshafen ''13.4.32'' arrival ds, VF, Sieger #146, Est. $150-$200, Sc. # 189, 199, 203