This sale is for an old Marchant calculator. Stamped on the bottom is \" XL-91707\" - not sure if this is the serial number or not. I am not an expert on these but I managed to figure out how to use this to perform simple addition and subtraction.I did not spend enough time playing with it to figure out multiplication or division. Everything appears to work as it should- all the cranks and levers move freely- numbers rotate. The machine does suffer from some paint loss and minor corrosion / tarnish.I do not see any cracks or breaks.I left it in as found - uncleaned condition- I will leave it up to the new owner to decide if they want to enhance its looks.