Burgess Meredith was 72 in Clash of the Titans when he played the character 'Ammon'.
That was over 42 years ago in 1981.
In 1997 he died aged 89, starring in 128 films in his career, 34 of those after Clash of the Titans was first released. If he were alive today he would be 115.
In Clash of the Titans, I think Burgess Meredith looks: