Michael Gambon was 24 in Othello when he played an uncredited character.
That was over 58 years ago in 1965.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 83, and has starred in 112 movies in total, 110 of those since Othello was released.
In Othello, I think Michael Gambon looks: