That is a new one for me. Though I may have heard it before. In studying civil war history it's amazing how quickly troops would "trade up". Some began with antique flint lock muskets and then ended up with a Spencer or a Henry repeating rifle through captures and raids.
Nice Item!! Best Of Luck To You And Happy Bidding To Everyone!! These Are Called Minet (Minnie) Balls Invented By A Frenchman Named Minet(Minay). Cool Auction!!!