James Garner was 65 in Maverick when he played the character 'Marshal Zane Cooper'.
That was over 30 years ago in 1994.
In 2014 he died aged 86, starring in 90 films in his career, 34 of those after Maverick was first released. If he were alive today he would be 96.
In Maverick, I think James Garner looks: