Somewhere on the base (probably have to look underneath) there should be a JA number - usually molded into the body. That number will usually help figure out who made the machine. There were several Japanese manufacturers that made machines under a variety of names for export to the US. We all depend on lists put together by enthusiasts to know which number corresponds to which manufacturer, and the lists aren't complete so you might have a mystery machine.
A lot of the Japanese zig-zag machines are VERY well made. Regardless of the manufacturer, you probably have a good quality machine on your hands. Plus it looks cool.
