12 Singer Special Disc Cams for Class 600 603 Sewing Machines in Box

These Singer Special Discs are complete in box. Great selection of fancy stitches including zigzags. The Disc Numbers are: 4, 5, 7, 12, 13, 14, 15, 16, 17, 19, 20, 21. The photos show the stitches they all are capable of preforming. Singer part number on box is 21976. The discs are in gently used condition.