This is the sewing machine I own....and I love it. Viking model 6440:
https://www.google.com/search?q=viki...mZzil4HOauM%3A
Mine has 8 cams, and LOTS of different stitches on each. I combine them sometimes to come up with even more. It is a workhorse, I can clean/oil it myself, and I found a walking foot for it too, so I quilt with it a lot. I see them for sale on CL and eBay sometimes.