Original WWII US Army Air Force wool Type A-4 mechanics knit cap made by Goodyear. The condition is consistent with no use.An original Type A-4 knit cap is hard to find AAF clothing, and is rare in such nice condition. The cap was from a local WWII AAF crewman, and has been in my collection for at least 20 years. See pictures and above description for additional information on condition. The item "Original WWII US Army Air Force wool AAF Type A-4 mechanics knit cap Goodyear" is in sale since Wednesday, January 03, 2018. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Uniforms". The seller is "jackets" and is located in Spokane, Washington. This item can be shipped to United States, all countries in Europe, Canada, Japan, Australia.