Yul Brynner was 27 in Flowers from a Stranger when he played the character 'Dr. Nestri'.
That was over 75 years ago in 1949.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
In 1985 he died aged 65, starring in 54 films in his career, 53 of those after Flowers from a Stranger was first released. If he were alive today he would be 103.
In Flowers from a Stranger, I think Yul Brynner looks: