This is one I am not sure about. I can't say something is not an old Johann Lotz piece if I don't know more about the things he did. The company was named after him by his widow, so he was gone before the early company designs were made. I am familiar with the older Loetz pieces, but not with the glass that Lotz himself may have made or designed. I am curious to know about the vase. It apparently was signed later, but perhaps it is the signature is the correct attribution??? We need a Johann Lotz expert to comment on the vase.