Christopher Plummer was 44 in The Return of the Pink Panther when he played the character 'Sir Charles Litton'.
That was over 49 years ago in 1975.
In 2021 he died aged 91, starring in 176 films in his career, 149 of those after The Return of the Pink Panther was first released. If he were alive today he would be 94.
In The Return of the Pink Panther, I think Christopher Plummer looks: