OK - so I got this baby at a yard sale for $15 about two summers ago.
It's got the buttonhole switch thing, I can't believe it doesn't have cams and I was amazed (and before a good googlesearch, confused) by the autowinding bobbin. Neato!
But I don't have the manual and I'm not sure what kind of vocabulary I should be googling for this baby (i.e. no idea if it's slanted or shanked or... um...