Vintage sepia glossy 5 x 3.25 photo of one of Sikorsky’s revolutionary S-38 fixed wing airplanes, signed in fountain pen, “I. Sikorsky, July 31, 1924.” Beginning in the late 1920s, Sikorsky finally achieved commercial success with amphibians, particularly the S-38, which first flew on June 25, 1928. Able to accommodate 8-10 passengers comfortably, the plane had an unusual structure with connecting rods joining the wings and fuselage. It had retractable landing gear and could land on either water or land. About 120 of the three S-38 models were built. In very good condition, with slight paper loss to top left edge and corner, toning and wrinkling from adhesive on reverse and some scattered surface marks and impressions. R&R COA.