Came across a featherweight today to be auctioned. The model # is AJ131428. The bobbin case is missing and I don't know how difficult or expensive this would be to replace. I didn't have anything to sew on, but it powered up and runs nicely.....without bobbin or fabric. The paint is overall pretty good with a few scratches, except that someone scratched their initials & last name into the paint of the extension table. I'm wondering if that could be buffed out perhaps? What else should I be thinking about? Any ideas on how much to bid? It's cute as can be. Thanks for any advice!