Up for sale is a Pre-Owned fully functional Texas Instruments Ti-30 Calculator Case & Manual - Vintage 1970s. This calculator works great; however, there are some etching on the front (photo #10) and on the back (photo # 4). The calculator requires a 9-volt block battery that is not included. Please look at photos. What you see is what you will receive. Please do your research to determine if this item is right for your application. Return accepted only if the item does not match photos or description. I ship fast. Thanks for viewing.