Comes with rubber gloves and a gas mask and IT AINT MINE... ws https://www.ebay.com/itm/1966-1967-...871629?hash=item2d01fcc74d:g:eZsAAOSwePReJJvh
It was mounted on the 430 that powered the turbolaser cannon on the Deathstar before Luke used the Force. "was" being the operative word... (it was the largest piece found)