Leonard Nimoy was 50 in Star Trek II: The Wrath of Khan when he played the character 'Captain Spock'.
That was over 42 years ago in 1982.
In 2015 he died aged 83, starring in 96 films in his career, 68 of those after Star Trek II: The Wrath of Khan was first released. If he were alive today he would be 93.
In Star Trek II: The Wrath of Khan, I think Leonard Nimoy looks: