This vintage electronic mini calculator, the aPF Mark 40, is a rare find for collectors of vintage electronics. With a red LED display and dating back to the 1970s, this calculator is sure to add a touch of nostalgia to any collection. Its brand, apf, is known for producing quality electronics and this model is no exception. The calculator is in great working condition and its vintage charm is sure to impress.

Not sure if it is in working condition. Have never opened other than to take pictures. Never put a battery in it. New in box and plastic.