Vintage Original Singer Top Hat Cam # 0 ZigZag 174526 Fits Models 401, 403, 411, 431, 500, 503, 600 series
-Original Singer top hat, Zig Zag cam.
-Cam number 0
-Part number 174526
-ZigZag (this is a hard to find cam)
-Fits Singer models 401, 401a, 403, 403a, 411, 431, 500, 500a, 503, 503a, 600 series touch-n-sew