Air mail envelope, 6.5 x 3.75, bearing a stamped cachet honoring the twenty-fifth anniversary of the Wright Brothers’ first flight, and bearing a December 17, 1928 Kitty Hawk postmark, signed in the top left in fountain pen by Wright. Envelope also bears an address from a gentleman in Portland, Oregon. In fine condition, with some slight toning and soiling and a paperclip impression along top edge. R&R COA.