How many movies have Ruggero Mastroianni and Ugo Tognazzi collaborated on?

They have worked on 15 movies together! Their first movie together was The Shortest Day (1963) while their highest rated movie together was My Friends (1975). They have not worked together since Days of Inspector Ambrosio (1988). They are most known for their comedy films together.

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Il Conte Mascetti - Raffaello "Lello" Mascetti
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Marino Bottecchia detto 'Mocassino'