It's about the size of a U.S. dime, maybe a tad smaller. Looks air force to me. Possibly 1950's? Any help would be great. The back has some design on the edges.
I don't think it's Air Force, the closest emblem I have seen like that was on the USAAF lapel pins from WW2, but it's not a match. From the size it might be off of a civilian pilot hat, maybe a chinstrap button. Similar to this one, but not military.....