This vintage Singer Buttonhole Attachment set comes complete in its original box with the instruction manual and feed cover plate assembly. Model number 121795 was designed for vintage Singer family straight-stitch sewing machines, enabling them to produce neat, uniform buttonholes. Crafted from durable steel and metal components, the attachment mechanism retains a clean metallic finish with minimal surface wear. The set includes the primary buttonhole attachment, throat plate/feed cover with mounting screw, original green and cream cardboard box, and the complete instruction booklet. A wonderful accessory for collectors of vintage sewing apparatus or active users of classic Singer machines.