Rare Amerex Uniibox Tan & Brown Joystick Gaming Controller for Atari

I couldn’t figure out the brand of this joystick so I looked inside. It has Amerex Uniibox inside as the manufacturer. Can’t find this anywhere on the web. I hooked it up to an Atari 2600 and it works. Looks like there is a very small hairline crack on top. Doesn’t go all the way through. Very unique and unusual joystick. I’ve never came across one of these. This is great for the gamer who loves vintage gaming.