Here is a short video of my old 112 Tank that I got in partial trade a couple weeks ago. This is vintage tinplate gauge one, clockwork(wind up). Getting better with each winding as the drive frees up and I flush more of the crud out of the spring. It had heavy smokers grundge on it, even the spring is brown from it. Right now I get about 1.5ish laps of my railway out of it.