Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Argentina - Zeppelin Flight - 1931 (October 24-28), 3rd SA Return Flight Paraguayan stationery postcard 70c red, uprated by 3 Paraguay definitives and 2 Argentinean stamps, appropriate cancellations, machine confirmation of Buenos Aires with ''CONDOR - ZEPPELIN'' line marking, Friedrichshafen ''28.10.31'' arrival ds, mostly VF and scarce mixed franking item, Sieger #135a, Est. $100-$150