I mainly collect German items and do not have much experience with American items. Honestly I have no idea if this even a U.S. piece. Nor if it is WWII or earlier. It looks like it may be hand made, possibly "trench art". I say this because the edges have small saw marks visible. I could not get a shot that shows this with the camera I used I may try again with a different lens later. There are no manufacturer marks on it either. Any thoughts or ideas would be greatly appreciated.