You are looking at a vintage American DJ GoboTec DJ Light Unit.   This one has been sitting in storage for a while with minimal use.  I purchased this years back (in the 90's) for a crazy price, although all of these old DJ lights were very expensive when they were sold new.  This was a dealer demo unit so only used a few times then put back in the box.  Light has been tested and works great.  Comes with a functioning 250 watt lamp but I am not responsible if the bulb does not make it through shipping.   

One of the early units from American DJ. This unit is called the Quantum. Unit uses a EXY 82 volt, 250 watt bulb as the source. The light shoots through a convex lens then through a rotating gobo wheel. The gobo wheel switches every 8 - 10 seconds. After the gobo wheel through another convex lens onto a rotating dichoric wheel with 12 different colored wedges on it. The wheel is sound active and rotates to the beat of the music. Later version of this unit was named the Gobotec.

https://vintagenightclublighting.blogspot.com/2010/06/american-dj-quantum.html

Pick up is free in Orlando, FL USA.  Please contact me with any questions.  Thanks for looking.