This set of 12 decorative stitch cams include numbers 4, 7, 11, 12, 13, 14, 15, 17, 18, 19, 20 and 21. They fit class 600 and 603 Singer machines which were made in the 1960's.
Prior to the development of electronic machines, several Zigzag models used changeable pattern cams to produce a variety of decorative stitch patterns. Early pattern cams known as ‘FASHION Discs’ were black with single cams. The first series of Fashion Discs for models such as the 306 and 328 were flat discs. The Fashion Discs produced for later models were black ‘Top Hat’ shaped and fitted into the top of the machines. This listing is for that type of disc.