It is a 15-88, to which someone has added a motor and a light.
I have a machine just like that, and I used to have that treadle table as well, and someone added the motor and light to mine as well.
I'd convert it back to a treadle, as they are pretty cool.
You can download a manual for it at singerco.com.
Last edited by mlmack; 09-17-2013 at 07:30 PM.