USAF MEDALLION RARE ( OFFERS CONSIDERED )

THIS MEDALLION IS UNDATED BUT I WOULD ESTIMATE IT TO BE FROM THE FIFTIES/SIXTIES BASED ON THE VERDIGRIS FORMED ON THE COPPER MATERIEL.

I TRIED LOOKING UP ON THE INTERNET BUT THE USAF WEBSITE IS BLOCKED GOR SECURITY REASONS PERHAPS. 

Size wise it is rather chunky at about 2mm thick and 40mm in diameter.