Seems like if you find anything anymore, your best bet is to keep it VERY quiet. I don’t care what it is....
He brought it home to Wisconsin and eventually, gave it to me. When I was in college, I took it to the Wisconsin State Historical Society where they identified what it was and demanded that I "donate" it to them.
I told them politely to "pound sand" and took it home. It now has a place of honor in my curio cabinet.