This is a not often seen, Atari Hall Effect Joystick. This has the large dust cap used on Escape from the Planet of the Robot Monsters. Can also be used on I, Robot or Roadrunner. Very hard to find these and can't be mimicked by other types of joysticks. This model is also known as Version G, part number A040935-02 G
I do have a pair of these for sale if you need to for a Robot Monsters Kit.
This is old and comes AS-IS. I cannot control what happens to the products after they leaves me. Buyer pays shipping.
COMES AS PICTURED IN LISTING PHOTOS.