Texas Instruments TI-83 Plus graphing calculator. It comes with a cover that slides off and on. I dug it out in response to a request post, but their school was requiring the newer TI-84 model.
I'm hoping to find someone else who can use it.
There are a couple of web sites that explain the difference between the TI 83 and the TI 84
https://mathclasscalculator.com/index.php/blog/ti-83-plus-vs-ti-84-plus/
https://www.techwalla.com/articles/what-is-the-real-difference-between-ti-8...
TI-83 Plus graphing calculator (Berkeley, near Claremont Hotel)
This offer has been gifted to someone and is no longer available.