What a wonderful machine, it zig-zags and has reverse. Smooth and reliable - if you can find one in good shape don't hesitate to get it. Prices can range between $300-$700 for just the head.
It is not as tough as a walking foot machine, but it will perform better than a household model like the classic Pfaff 130. Less suited for upholstery, but great for sewing clothing. These are also prized by sailmakers.
This was stored for years in a warehouse gathering dust, rust and guming-up from old dried-up oil residue. It took some love and elbow grease to bring it back from disrepair.
See this machine in action in the video below.