Vintage Singer buttonhole attachment in original box with instructions.  Attachment #121908 (Buttonholer), with attaching screw and feed dog cover plus instruction booklet.  In original box.   Box has water damage and side has been taped to hold torn corners on cover.  Booklet complete and useable. Feed dog cover has needle marks but functions. Buttonholer may need cleaning and oiling but seems to work well.  Old style for lock stitch (low shank) Singer machines.  Original accessory for Featherweight 221 machine.  2 pounds shipping to lower 48.