Opening 1993 Midway joysticks

[cill]

I bought recently control panel which had some Midway joysticks mounted on. Joysticks are from the game "NBA Jam", so they are 8-way microswitch joysticks from the year 1993.

The problem is that I dont seem to find out how to open these joysticks (remove the handle). And thatswhy I cant get them out of the panel. Is there anyone who knows the mechanism?

Thanks in advance..

[SirPeale]

There's a little 'E' washer underneath.  Remove it, and everything should slide right out.