Thanks fellas.

I went ahead and offered $40 for it, and he accepted. As it turns out, he's a collector too and has a COMPLETE Macintosh TV with original box, remote, documentation, etc. ... this was his extra. He also had one of the black Apple set-top boxes. First time I'd ever seen one of those (except in pictures).

I'm going to hook the machine up this weekend and play with it a little bit. Can't believe I found one after all this time.