I went to a thrift store looking for attachments for my recently acquired Singer 201, and this girl followed me home:
It's a Singer 401, Slant-O-Matic. Not sure how it followed me home, but it does come with attachments, desk and manual. A quick search on the net finds similar models listed on eBay for $300+. I paid $70 and got all kinds of cool-looking feet and whatnot.