Go to a local machine shop, some carry used swing machines and may have one to sell. And may have a picture to show you.
Also a person that just repairs machines may have one and a picture. Always check to make certain the the shuttle is in the sewing machine. Sometimes stickey fingers will take them. They
are $100. to replace. Go on ebay and check and bid or go to
Craigs List and post what you want and someone may have one and is willing to sale it. You may get a real bargain on Craigs List. I understand Singer came out with a new one because they are so popular but I am not certain. I have one I don't use but it was my mothers, so it is a keeper for now.