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 missing the screws on the bottom (so it is a bit loose in movement). Note that we think the ball is not the original, it appears to be larger than it should be and isn't completely on the threads.
See pictures for more details on its exact condition.
