Re: Did the buttons on the first one 'click' when you push 'em . . . ?
I had an old TI that looked a lot like that. Old 9 volt that I toted everywhere. While in Italy, late 80s, I let a fellow tech borrow it, going into much detail about its age, the fact that the buttons did click, that the screen WAS LEDs -- as well as its personal worth. She smiled a lot during my "briefing" and agreed to take good care of it. I got it back fine.
I can recall using it during my security days with Burns, that would have been 92-96. Dunno where it is today.
Dan