James Stewart was 50 in Anatomy of a Murder when he played the character 'Paul Biegler'.
That was over 65 years ago in 1959.
In 1997 he died aged 89, starring in 146 films in his career, 71 of those after Anatomy of a Murder was first released. If he were alive today he would be 116.
In Anatomy of a Murder, I think James Stewart looks: