James Coburn was 42 in Duck, You Sucker when he played the character 'John H. Mallory'.
That was over 53 years ago in 1971.
In 2002 he died aged 74, starring in 123 films in his career, 97 of those after Duck, You Sucker was first released. If he were alive today he would be 95.
In Duck, You Sucker, I think James Coburn looks: