Check the listing for details. Texas Instruments TI-83 Plus Graphing Calculator + Cover Tested Working (Read). Condition: Used. Listed at 24.95 USD. This Texas Instruments TI-83 Plus graphing calculator is a must-have for anyone in need of reliable mathematics computation. The calculator comes with a protective cover to ensure longevity and tested to confirm its functionality. Steve M is written or etched on the top back and Steve Morgan is written or etched into the bottom battery cover. There are some other scratches or marks on the back. Please see photos. Also on the front of the calculator, framing the graphing face is some lines and dots of whiteout.The graph can still be seen perfectly. Steve Morgan is also etched on the inside of the cover as well as written in white marker. Please look at all pictures, as they are part of the description. Please ask and email any questions before purchasing. Item ships within 3 business days of cleared payment. S