COOL! My mother had stitch cams, she had it all her life, I tried to inherit but it had done it's time.. The disc are coolest thing.. It made interesting embroidery stitches. I still have some denim items made with this machine.. Bullies at school would always steel my denim pencil cases mother made for me. Nothing like poking the little guy..
Mother had a green Elna, same idea..
Your lucky you found such machine still alive.. Very good with denims and curdoroys. My mother only had the I think ruffle thingy foot, or maybe it was walking foot for quilting. Was ugly, and made so much noise. It probably with your machine.