Greatest Boss of the Showa Era (1966)
Original title: 昭和最大の顔役
Greatest Boss of the Showa Era is a 1966 Japanese-language drama movie directed by Kiyoshi Saeki, with a running time of 1h 30m. It stars Koji Tsuruta, Tetsuro Tamba and Tatsuo Umemiya.
Somewhat unique as it appears to be one of the very rare appearances of master thespian Itô in a yakuza role.