The plug-in for the cord is where it differs from the Singer 15 it is a copy of... The plug has three slots, rather than round holes (not unlike our electrical outlets, but three) and the connection is on the top of the motor, on the back of the machine, rather than on the right side like a Singer. quote]
I just happen to have one of those cords. They are pretty common to the older Kenmores. I'll have to look and see if I have a bobbin case, may have used them all.