Thanks for the input. I will look in the place mentioned for the serial number, thanks, Ken. Gosh, I can't believe there's a no. right above the stitch length knob and I didn't see it.
The machine is at my daughter's so I'll have her look for it. Also appreciate Rodney's expertise and possible value. I'll check on how expensive the cord it. Sounds like it may be worth the cost. It appears to be in good condition (cosmetically) and the wheel turns by hand freely.