The Chaos Dwarf Leadbelcher is the out-of-print Citadel model MD3 from the Machineries of Destruction box set series,
seen here on Stuff of Legends. Originally designed as a Goblin Organ Gun,
this piece was discontinued except for the name, which got recycled into the Ogres' army list. Here it is resurrected as another magnificent
Chaos Dwarf death machine. It comes with a crew of one Chaos Dwarf and two slaves, and could be fielded using the rules for the Dwarf Organ Gun
or similar war machines.