I do not have one but they are the neatest little machine to have. You can take the sides off and expose the inner skeleton of the machine.
Yours is a really nice example and I would love to have one if I could find one. They were made in Japan if I remember right and were shipped abroad. And if I remember right they were made from aluminum. Like I said you do not see these everyday so I will have to do a little background research for you.
Billy