Several came with my 1960s or 1970s Singers 401 and 500 Rocketeer and with my 1950s Featherweight. I was just looking through the top hat cams that came with the 401 and 500 the other day. Apparently, I bought some off of EBay trying to get one of each, ended up with several of the same ones, still don't have one of each. I also have bunches of the different feet. One of these snowy days (hopefully far in the future!), I plan on getting all of these out and making sample stitches and see what they do!
Joyce