That was over 50 years ago in 1972.
Today he is 90, and has starred in 104 movies in total, 87 since The Godfather was released.
In The Godfather, I think Robert Duvall looks:
The Godfather scores 8.5 out of 10 on The Movie Database.
Robert Duvall's first acting role was as 'Arthur 'Boo' Radley' in To Kill a Mockingbird, released in 1962 when he was 31.