How many movies have Ester Nin and Pedro Masó collaborated on?

They have worked on 4 movies together! Their first movie together was Operación: Embajada (1963) while their highest rated movie together was ¡Cómo sois las mujeres! (1968). They have not worked together since ¡Cómo sois las mujeres! (1968). They are most known for their comedy films together.