Max von Sydow was 19 in Only a Mother when he played the character 'Nils'.
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 2020 he died aged 90, starring in 157 films in his career, 155 of those after Only a Mother was first released. If he were alive today he would be 95.
In Only a Mother, I think Max von Sydow looks: