This vintage Texas InstrumentsT1-81 scientific calculator is a true gem for collectors and vintage electronics enthusiasts. It comes with its original case and is perfect for graphing. This calculator was manufactured in the past and is now considered a vintage item, adding to its charm and uniqueness. The calculator has been tested and is in good working condition, making it a great addition to any collection or for those who enjoy using vintage electronics. Don't miss out on the opportunity to own this rare Texas InstrumentsT1-81 calculator today. Please look at pictures for more details. We will package securely and ship promptly.