How many movies have Eiji Gō and Toshinosuke Nagao acted in together?

They have worked on 10 movies together! Their first movie together was Kidō sōsahan Tōkyō gozenreiji (1962) while their highest rated movie together was The Black Gambler: Left Hand of the Devil (1966). They have not worked together since Cat Girls Gamblers: Abandoned Fangs of Triumph (1966). They are most known for their crime films together.