-Original Singer top hat cam
-Cam number 19
-Part number 174539
-Stitch pattern Block
-Fits Singer models 401, 401a, 403, 403a, 411, 431, 500, 500a, 503, 503a, 600 series touch-n-sew
-Original Singer top hat cam
-Cam number 19
-Part number 174539
-Stitch pattern Block
-Fits Singer models 401, 401a, 403, 403a, 411, 431, 500, 500a, 503, 503a, 600 series touch-n-sew