Scarce Singer #26538 single thread embroidery attachment. It comes complete with the original instruction sheet, box and L shaped spool pin. This attachment is in very nice vintage condition, it is rust free and functions very well. The box displays minor wear consistent with age. Compatible with low shank machines including the 15, 66, 99, 127, 128, 201, 221 Featherweight, etc. *Signature confirmation will be required for delivery