Lucky you
According to ismacs made in 1916, easily looked up, the odd thing is that Singer.co lists the serial number to 1914. I'm sure it can be made to sew again, with a bit of TLC. Does it still have the bobbin case? If the hook turns half way back and forth it is a model 15, if it has full turns, it's a 115 (they look a bit different underneeth). If a all parts are there it's usually about cleaning and oiling (a lot of work the next few days). The motor and case looks like it might be retrofitted at some point, but I'm not sure. I'm a bit emvious.
Check wiring before pluggin in :- )