Which game is this joystick from?

[unclet]

Found this joystick lying around in a box and have no idea what game this came from......any ideas?   I am going to post it on Ebay soon so knowing exactly which game would be nice to have in the description.  How much would you expect I should get for this thing?

When you move the joystick handle around a couple of slides move between X-axis and Y-axis optics which are used to register the movement.  There are no microswitches here (see close up photo and you can see the slide go between the optics).

[unclet]

Here is another pic:

[unclet]

Here you can see one of the set of optics which the slide goes between :

[spidermonkey]

I'm pretty sure thats out of a Bally/Midway  "Space Encounters"  caberet version. The full size upright used a flight yoke.

[unclet]

Are you sure the Space Encounters used this type of joystick which has the X-axis and Y-axis optics in it?