Originally Posted by
Sewnoma
How interesting...I've been under the impression that all 201's had the lamp in front and a potted motor. Maybe I HAVE seen a 201 locally and assumed it was a 66 because the lamp was in the back and the motor was external! What do you know... Although I think the different spool pin area would have clued me in that it was something different.
I'll have to keep my eyes peeled.

It's pretty easy to tell the difference between a 66 and a 201. Look for the round stitch length plate. A 66 doesn't have it, a 201 or a 15 does. Then look where the tension assembly is. If it's on the face it's a 15. On the front like a 66, it's a 201.
Cari