This is a WWII US Air Force Purple Center Stone ring dating to WWII. It has a Gold Filled silver content with stamped maker mark?? It measures a Size 10 and can be easily resized by any jeweler. Note the winged prop branch insignia on the sides, only used by the US Army Air Force, and not the later USAF formed in 1947. The ring is in very good condition considering its age. The item “Vintage WW2 United States Air Force 10kt Gold Ring with WW2 Air Force Patch” is in sale since Sunday, October 16, 2016. This item is in the category “Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Other US WWII Original Items”. The seller is “hewhohesitates…” and is located in Oxford, Connecticut. This item can be shipped worldwide.