I almost forgot, Susan, that you have to strip the finish off the brass before the Ager will work. The finish will probably be a lacquer and you can soak the brass parts in lacquer thinner for a few minutes to remove the lacquer. Lacquer thinner is extremely flammable so you will want to do this outside and away from any source of ignition. Lightly rubbing with the 0000 steel wool will help to remove the lacquer also. Do this with the steel wool wet with the lacquer thinner. Be sure that you leave any rags that you used outside to dry completely for a couple of days. Also, be sure that you wear chemical resistant gloves and eye protection while you are doing any of this work.