Harrison Ford was 23 in Dead Heat on a Merry-Go-Round when he played the character 'Bellhop Pager (uncredited)'.
That was over 58 years ago in 1966.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 81, and has starred in 128 movies in total, 126 of those since Dead Heat on a Merry-Go-Round was released.
In Dead Heat on a Merry-Go-Round, I think Harrison Ford looks: