This is an example of a United States Air Force Class "A" summer service uniform coat. USAF khaki shade No. 193 also know as the "silver-tans" was officially adopted by the air force on November 15, 1950 and phased out in 1978.
This uniform was worn by the donor Maj. William P. Haynes. Haynes served with the U.S. Army Air Forces Air Transport Command in North Africa and Italy during World War II. Haynes ended his service at the end of the war but joined the newly formed United States Air Force in 1948. Haynes served in various locations with the Military Air Transport Service throughout the United States, Greenland and Libya until his retirement in 1965.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.