They were produced by the Petibone Manufacturing Co. of Cincinnati. Most are found with the "Stenzels Rooter" paper backing, if your Seymour is the same one I saw on ebay I believe it was missing the paper back. One of the players I have (Harper I believe, will have to check later) is the only one from the set I have seen that has a "Petibone Manufacturing" paper insert as opposed to the Stenzel paper backing. Here are my Stenzels... -Rhett