I recently purchased a lot of pocket watches/movements to tinker around with and hopefully fix up. I've done most of my tinkering on wrist watches, so I'm a bit new to the pocket watch world. This seemed to be the most interesting movement out of the lot. It seems to be of a pretty decent quality, Swiss Made, adjusted, nice perlage, etc...but I can't seem to find a manufacturer on it anywhere. Was this common? Does anyone have any idea on the maker and/or approximate era?
It seems to be around 19 ligne (43mm) if that helps.
Movement ID - Imgur