Looks like a rather smallish watch (30 mm's ?), maybe a converted pocket-watch that has been redone to the current state.
The lettering in the bottom states 'swiss made', as you might have noticed by now by your own pictures.
Based on the wear of the bracelet, I might opt for a golden one, from 9 Ct upwards.
Or copper.
The bracelet has been f&^%ed up by that missing-link-that-has-been-replaced-by-some-odd-other-thingy. A decent (!) goldsmith might take care of that.
If you want to know real info on it, have a qualified (....!...) watchmaker open up the back case, take pics of al the insides and post again, so the community (or you, yourself) will be able to tell year of manufacture and all that.
But what have you already discovered yourself on this watch?