Singer 457
This is one of the early and better zig zag sewing machines made by SINGER. Most / many other manufactors of sewing machines were making zig zags before Singer produced one. During the improvedment stage Singer made the 237 as a simple but good plain zig zag sewing machine. This 457 soon followed with more improvements. In the Singer 457 we see the early designer stack of cams (2) to make stitches automatily.
The price is $152.00. You will have a sewing machine for years where buying a plastic wonder will soon disappoint you.