Been a long time since I've participated here since I sold my detector. I'll be getting another soon... This post is for my father. He recently found an item that we can't really identify. He thinks it may be Brass, but I'm not sure. This was found around Warrenton, Virginia. Any help identifying would be appreciated. Looks like a little embossed horseshoe in the thin metal. This item is around the size of a half dollar.