Looking for information about this pocket watch

I recently inherited this watch from my parents. They have inherited it from my grandmother. It has been in a box for at least 50 years. It seem to be an early Omega watch. I am wondering if the ppl on this forum can give me some more info on the watch. It has a clear id number on the inside of the case. I am afraid to open the case to look at the mechanism fearing I will damage anything. Everything, including the strap that is attached to it is original. The pocket watch still works perfectly 😀 Any info will be much appreciated.

@JimInOz Thank you very much for your answer. I tried to open the case to see the mechanism but I was unable. It has likely never been opened since production more than 100 years ago. I will have to go to a watchmaker to open it without damaging.