Another example of an actor who routinely played much older characters is Clive Dunn, who most notably at age 48 played the elderly Lance Corporal Jones in the UK sitcom Dad's Army [0]
For a similar experience, watch Antonioni’s Zabriskie Point (1969). Philip Baker Hall was only thirty-seven when he acted in that film, but he already looks like the old man whom people would recognize from the more acclaimed roles he started getting in his fifties and sixties.
Also Abe Vigoda. Who is dead now.
That shows you how decrepit people were at that age back in the day.