Here is my thread on this machine. I found that mine had the one zig zag cam in it already. I purchased a set for it on ebay. I bought an original manual also on ebay first and if I remember correctly it had great photos of the cams in it and I matched those to the ones I finally found on ebay. I will go look to see if I have any photos of those cams for you.
http://www.quiltingboard.com/vintage...r-t239480.html