Donald Pleasence was 68 in Halloween 4: The Return of Michael Myers when he played the character 'Dr. Sam Loomis'.
That was over 36 years ago in 1988.
In 1995 he died aged 75, starring in 178 films in his career, 26 of those after Halloween 4: The Return of Michael Myers was first released. If he were alive today he would be 104.
In Halloween 4: The Return of Michael Myers, I think Donald Pleasence looks: