opps- hit post too soon -
I have four different sets of back clamp attachments - Singer was making a lot of changes to the attachment set at this point in time .
This is a better picture of the attachment part with a hemmer mounted, though it's the side clamp version. The hemmers are the same for both.
This is the next generation set - it has a different ruffler and tucker - Singer kept with this style tucker after this.
This is the last set Singer made for the back clamp - it has a different ruffler. Singer changed the ruffler after this, but had discontinued the back clamp by then.
