I don't know much about the watch. It was in my late grandfather's collection and no one could tell me anything particular about it. He lived in Mexico but his family came from Europe and the watch might have traveled with them. I didn't try to open the case so I don't have any information about the movement but I can try to open it up if more information is needed. The dimensions are 21.9mm wide, 28.6mm tall for the main body. There's a stamp on the bottom of the case which I believe says 10k R.G.P. and has a e in a diamond. If I wind it, it will tick for a short period of time before stopping. Besides that I and what's in the photos I don't have any other information about the watch.
Case Serial No.
Approximately 17.9mm wide, 21.6mm tall