David McCallum was 22 in Robbery Under Arms when he played the character 'Jim Marston'.
That was over 67 years ago in 1957.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 90, and has starred in 66 movies in total, 65 of those since Robbery Under Arms was released.
In Robbery Under Arms, I think David McCallum looks: