Tchéky Karyo was 27 in The Return of Martin Guerre when he played the character 'Augustin'.
That was over 42 years ago in 1982.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 70, and has starred in 106 movies in total, 103 of those since The Return of Martin Guerre was released.
In The Return of Martin Guerre, I think Tchéky Karyo looks: