I own alot of vintage computers but this is one I have never even seen for sale. Much of my nostalgia for vintage machines has faded but I still have a twinge

I own alot of vintage computers but this is one I have never even seen for sale. Much of my nostalgia for vintage machines has faded but I still have a twinge for this one. I first saw one some time in the 1970's when I was < 10 years old - magic.