I can’t tell you anything about the watch but the case is 800 standard silver (fairly obviously) and has the Swiss grouse mark for 800 silver in use from 1881 to 1933. It also has the German moon & crown silver mark probably because the watch was intended for sale in Germany. The maker, SFC, may be Schwob Frères & Cie of La Chaux-de-Fonds, Switzerland.
Phil