I have a 301A in the Mocha. She sews beautifully now that she is cleaned and oiled. I think she had 50 year old lint, grease and oil in her. I am not sure where she was stored but it wasn't climate controled. The bobbins and the bobbin case are what have obvious rust on them. I have been working to clean that off but once I got the surface of the bobbin case cleaned it really hasn't mattered.
I love how it sews. I bought it to take to my first ever retreat and have been sewing blocks on her this week for practice.
Now, I really want a black one and LBOW.....Husband says, "Go for it." Of course, that man has the same model antique tractor with two different front ends on it. He understands the need!