Twelve angry men

From the quote below, we can infer the od man is seventy-five or thereabout.

NO. 9: It's just that I looked at him for a very long time. The seam of his jacket was split under the arm. Did you notice that? He was a very old man with a torn jacket, and he carried two canes. I think I know him better than anyone here. This is a quiet, frightened, insignificant man who has been nothing all his life, who has never had recognition—his name in the newspapers. Nobody knows him after seventy-five years. That's a very sad thing. A man like this needs to be recognized. To be questioned, and listened to, and quoted just once. This is very important.