Nice Original Singer low shank buttonholer. Buttonholer comes complete with original feed cover plate, 1 slotted clamping screw, manual, and 5 templates (5/16 strait, 5/8 strait, 13/16 strait, 1 1/16 strait, 1 1/6 keyhole).
Buttonholer is in excellent shape. Most of the buttonholers I stock have never been used. I inspect and lubricate all of them. This one will come With the original box.
This will fit most all low shank machines including models 15, 27, 28, 66, 99, 101, 201, 221, 222.