I have about all the watch setting arrangements on my eclectric accumulation. Front and rear key. Jergensen bow, pin, nail set, stem, lever push, lever pull. There may be more and one is a Gruen Columbus Railway King 1893-4. Its lever moves sideways clockwise to set. It has a rounded end and does not move in or out. Have not seen on another Columbus or any other. Not original case. A Gruen experiment, or do others exist?