Michael Gambon was 67 in Harry Potter and the Half-Blood Prince when he played the character 'Albus Dumbledore'.
That was over 15 years ago in 2009.
Today he is 83, and has starred in 112 movies in total, 30 of those since Harry Potter and the Half-Blood Prince was released.
In Harry Potter and the Half-Blood Prince, I think Michael Gambon looks: