VINTAGE TEXAS INSTRUMENTS TI-2550 ELECTRONIC CALCULATOR WITH ORIGINAL CASE Sold as spares or repairs under the ebay condition of "for parts or not working" due to it not being fully tested, it does turn on and do the basic calculator things but I'm unsure about the other switch and the MR button is slightly pushed in, also the inbuilt battery is probably knackered. In well used condition with various signs of use, see pictures for more details. Please study the pictures as they form part of the description and message me with any questions.
eBay