Well no it's not stolen I worked for the schools and was on the school board for many yrs. It was given to me and my son used it when he needed it. Still in great condition and I have no use for it anymore. So before you SUSPECT KNOW THE FACTS.
Just a quick tip. To help visitors appreciate the intricacy of the technology and VALUE of this calculator, be sure to include a mountain of details about the system and capabilities. You should list info like 'you would find' on Texas Instrument's website itself. Trust me, all to often people jump to quick conclusions instead of "right conclusions" on valuable auctions due to there being little info. But your auction should still do very nicely, either way.