Thanks very much. I'm not sure of the model name, but I've generally seen it referred to as the "ultra thin", and I believe the movement is ref. 2003. Supposedly, at the time it was introduced (late 50s?), it was the thinnest manual-wind movement ever made. Shortly after I bought it, I posted some pictures taken from the side that show just how thin it is. I'll try to find them and re-post them.