1930 Zeppelin, 65c-$2.60 set of three used on single cover, making the round-trip flight to Friedrichshafen, usual cachets and markings, v.f. (Cat No. C13-15) (Image)

Est.US$750

1933 (23 July) Italo Balbo Armada, registered flight cover paying $3.60 from New York to Rome, franked with 30c (2) and $1 (3), tied by departure cds, with corresponding Italian Air Cruise violet cachet, blue "Crociera Aerea" handstamp, with 2 August arrival markings on back, sent back to the addressed and Officially Sealed by the Sommerville, Mass. Post Office, with strip of three labels, 23 August 1933 arrival pmks, fine and scarce (Image)

Est.US$500