I love when these old threads bubble up to the top again and I recognize names from years ago. The 401 was the machine I learned to sew on, my grandmother's. She was a Seamstress with a capital S - evening gowns, draperies - she could make anything. I made most of my clothes for junior high and high school on that machine.
It was the first vintage machine I bought 20 years ago when I got the vintage machine bug - they're really lovely to sew with.