Auction #93 Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World

1932 (April 4-13), two postcards of the 2nd SA Direct and Return Flights with German and Brazilian franking, first one franked by two stamps, green Flight marking and Recife (Pernambuco) ''7.IV.32'' arrival ds; the other one - franked by three Brazilian values, bearing black confirmation cachet and Friedrichshafen ''13.4.32'' receiver, mostly VF, Sieger #143, Est. $150-$200