The Skaven warplightning cannon from around 2002. It came out with the second version of the Skaven army book.
Warplightning cannon from the back
Warplightning cannon from the left
Warplightning cannon from the right
Warplightning cannon from 2011 in plastic.
new Warplightning cannon
new Warplightning cannon
new Warplightning cannon