Coo, well found!
The second listing mentions Michio Suzuki on the box, so that's pretty conclusive. However, I doubt if either seller would know much about this and are purely quoting from available data.
What I would like to know is the Japanese maker of the plates, so finding out which companies s/he (do we know it's male?) designed for would probably reveal the answer.
I'll carry on scratching when I have a little more time.