How many movies have Angelo Francesco Lavagnino and Giancarlo Romitelli collaborated on?

They have worked on 4 movies together! Their first movie together was The Invincible Masked Rider (1963) while their highest rated movie together was Samson and the Slave Queen (1963). They have not worked together since Hercules and the Tyrants of Babylon (1964). They are most known for their adventure films together.