I am looking at pictures of 201's - and I think they have a lever and dial for the stitch length choices. This one looks like it only has a knob. It is on Craig's list for $45 (in a city I don't live in - but my parents do - and only about 5 miles from the seller!!). The seller indicates it is a circa 1930's machine. Wish they would post better pictures. Don't think they know anything about the machine. They just want it gone!
I am currently obsessed with these vintage machines!!! I never would have thought this of me. I keep telling myself - you just acquired a 15-91, be happy with that (and I am very happy!). But that said, in all of my researching I have also determined that I would also like to get a 201 model as well. So keeping my eyes out for a really good deal. Not so afraid to purchase one that needs some work, re-wiring, etc.
Would prefer to wait a bit before purchasing another sewing machine (even if only $45) - but deals come when they come.