Textronix 4025 terminal seen

All, Spotted a (what I regard as) classic terminal the other day. It was at A-Tex electronics in San Antonio (if your phone book isn't that new, call the Altex electronics and ask for their recently spun-off parts division near the airpont). It was not in good shape - several keycaps broken off, scratched, very dirty, no manual. It was $25 as is, and I had no chance to power up and see how it is. Also the missing manual hurts, because a lot of the very cool and well-thought-out graphics instructions are called by escape sequences that I don't remember at all. If I remember right, the 4025 was Tek's start at transitioning off the long-lasting phosphor technology into a regular bit-mapped display. Istr that it had maybe 2 Z-80's and about 64k of RAM, which was not bad at the time (late 70's to 1980 or so?) for a whole system, to say nothing of a terminal. It had a pair of thumbwheels for cursor control. It felt and looked industrial strength and was a pleasure to use. Anybody remember more useful info about it? - Mark