A friend of mine owns this machine, it belonged to her mother. She was going to throw it out or try and get a couple dollars for it, but I'm having a hard time figuring out the model and what it's worth. When she said she was going to throw it out, I almost had a stroke. I told her I would do some research and see if I could find out some information about it.
If I had the space/money, I would buy it off her myself. It's very dusty, my apologies, but hopefully you can see enough details in the all the pictures to help me out a little.
The best I can figure out, it's the RAF pattern, and maybe a model 15? What I had been reading all made it seem as though it shouldn't be electric....but it is and is in a table with a knee bar. The serial number is AD699755.