Original 4-way microswitch joystick used in many of Nintendo's earlier games. This is used in games such as Donkey Kong, Donkey Kong Jr., Popeye and Mario Bros. This particular joystick is in used condition with some lighter wear on the joystick ball and dirt/dust everywhere else. It's movement is a bit tight, it will need to be cleaned up and lubricated, but should be fine for use on a game once restored.
See pictures for more details on its exact condition.
