ok I stop. don't be mad :-D It's my grand father 's watch. I don't want to sell it. Only to know his value. Thanks a lot for your answers
Most likely a 1950s 2576 with a Cal. 344 bumper movement in it. These usually sell for around $400-$600 on ebay depending on condition.
Nice watch! Your grandfather has good taste. It looks similar to the 2576 cal. 342 I am wearing today.