Bobbin Winder Complete Unit, Singer (Vintage Original) Style:Cupped The part number that is

The part number that is signicifant is the Throat Plate

has one of the old style Tension Units then you might consider the option of switching it to a numbered tension unit

different stitch cams and a “made-for-you” sample swatch

For the embroidery samples

Bobbin Winder Complete Unit, Singer (Vintage Original) Style:Cupped The part number that isIf your machine has a broken Bobbin Winder, keep the original screw and washers, and replace it easily with this vintage original part. This is sold as a complete unit with the black mounting piece and wheel attached. Select the style that more appropriately fits your machine, based upon the Featherweight Timeline and when certain styled bobbin winders appeared. They all fit the same, but styles varied based on year of production. These are original