Those old MWs machines are very nice. I have had a couple here and there and I have a lot of respect for the Happy Company. Did you not get any cams with the machine? Do you know we have pictures of other older deluxe machines?
Here is a link - feel free to post pics:
http://www.quiltingboard.com/vintage...s-t207880.html
I'm thinking there are two kinds of vintage fancy stitch machines - those with a cam stack and stitch selector and those with drop in cams. I think I like the ones with the cams - much simpler machines and they get the job done well.