This is a great, rare WWII sweetheart bracelet. Probably made on a battleship or aircraft carrier that had a machine shop. It has a vaulted 2" submarine service badge affixed to the front. The steel is highly polished and was probably used in aircraft manufacture or repair of some type. Please excuse the reflection in the close up picture - the surface is quite shiny! The badge has very nice detail and looks to be a bronze/copper alloy. As the serious collectors know, it is rare to get anything from WWII submarine service. Nice addition to any collection. Will fit up to a 7" wrist comfortably.