Well, everyone, a quick update -- I am thoroughly and irremediably afflicted with SMAD. I was browing around on the Goodwill site and saw a poor, orphaned little Featherweight, no case, needle doesn't go up and down according to the listing, and it called to me. I don't know exactly how old it is, but it has the chrome-edge hand wheel, a chrome stitch length lever, but a numbered tension dial. I don't know what kind of face plate it has (striated or scroll). I don't even know if it has a bobbin case! But I saw it was $100, put in a bid, walked away to let fate take its course, and... won it! $101.55, which is a lot of money, and I don't know if I'll be able to get it working, but it's going to be an adventure. Can't wait for it to get here.