To me, it looks like a fake. Like a Shin-ei made wah that someone cut a hole in the top of and tried to pass it off as a Wah face. Pretty interesting imo.
It's made in Japan by Shin-ei / Companion. They would slap on any name you wanted if you desired selling them in your country. Dallas-Arbiter usually had Italian made wahs that they re-badged but I guess they re-badged some Japanese ones too.
I wonder if it should have been in the Euro FX section of the book or the Japanese section?