I GUESS it could be something made by Joseph A., but have found that a few rifles made by Jacob and Carl George have some similarities. Carl's stock architecture doesn't match up from the only rifle of his I have seen pictures of. (Patrick's Book) But his choice for inlay shapes and his engraving style looks close from not real clear photos. What is quite common is the lack of a signiture on many of these Berks Co. rifles. Have always thought these guys made products so unique that putting their name on them was akin to sinful pride.