Thanks everyone, and this looks just like the machine in the manual (including the motor/bobbin winder setup) and other post Janey linked. The shuttle looks different than a 27/127 but I haven't put them side by side yet, and I have a handy chart from another board to check the needle.
I have a Kenmore foot control, and the machine it belongs with, which I will try as far as fitting a connector to this motor.
I'll post a picture after it's cleaned up.