Richard Burton was 57 in Nineteen Eighty-Four when he played the character 'O'Brien'.
That was over 39 years ago in 1984.
In 1984 he died aged just 58, starring in 89 films in his career, 9 of those after Nineteen Eighty-Four was first released. If he were alive today he would be 98.
In Nineteen Eighty-Four, I think Richard Burton looks: