[Thanks to Vincent for contributing.]
The trouble with translated titles of martial arts movies. Time of the Iron Hand is probably an unofficial alternative title for Wei Lo’s Fist of Fury (1972), starring Bruce Lee – one of its common release titles in USA was The Iron Hand. The third film on the marquee, Triple Irons, is referred to Cheh Chang’s The New One-Armed Swordsman (1971), which was released with this alternative title. In between, an american film, Stuart Rosenberg’s The Laughing Policeman (1973).
Image from Elaine May’s Mikey and Nicky (1976).