Stupid IMSAI Question

IMSAI is a company, really, not a computer. They made about a dozen models of computers from 1975 to about 1981 (might be off a year or so on the end date). But when people talk about an "IMSAI" computer, they are almost always talking about the original IMSAI 8080 computer, the one in the War Games movie. That model was made from 1975 to about 1978, and it was made only in one color scheme (blue cover, grey lower front panel below the switches). It was a very generic S-100 computer. ************ Exactly how old is the IMSAI computer? I assumed it was from the 80's as I have only seen it in the film War Games (starring a young Matthew Broderick). A quick search on the 'net a few months ago only revealed the one unit, available in 3 colours (grey, blue and one other, IIRC). Regards, Andrew B aliensrcooluk at yahoo.co.uk