How many movies have Nello Pazzafini and Stelvio Massi collaborated on?

They have worked on 9 movies together! Their first movie together was Killer Caliber .32 (1967) while their highest rated movie together was Sartana's Here... Trade Your Pistol for a Coffin (1970). They have not worked together since Convoy Busters (1978). They are most known for their western films together.