I have a 201-3 my grandmother bought when I was 5-6 (she had to borrow $5.00 from me in 1951-52). I still remember the day they delivered it to her big Victorian house. Love that machine and I was told difference between 2 and 3 was motor. Do you have the original manual? That is how I know mine is a 3. Has original case and all the feet etc. Grandmother had it, then mom who made drapes and slipcovers and lots of clothes on it and now I have it and am almost 69.