How many movies have Shōzō Nanbu and Toshihiro Nabei collaborated on?

They have worked on 2 movies together! Their first movie together was 新 鞍馬天狗 五條坂の決闘 (1965) while their highest rated movie together was Hanzo the Razor: Sword of Justice (1972). They have not worked together since Hanzo the Razor: Sword of Justice (1972).