How many movies have Alberto Lionello and Luciano Martino collaborated on?

They have worked on 5 movies together! Their first movie together was Ricordati di Napoli (1958) while their highest rated movie together was He Who Hesitates Is Lost (1960). They have not worked together since The Virgo, the Taurus and the Capricorn (1977). They are most known for their comedy films together.