Walter Matthau was 42 in Charade when he played the character 'Hamilton Bartholemew'.
That was over 60 years ago in 1963.
In 2000 he died aged 79, starring in 85 films in his career, 68 of those after Charade was first released. If he were alive today he would be 103.
In Charade, I think Walter Matthau looks: