Action Comics vol.1 #62 - Cover date July 1943
How long will Superman live? It’s a question with which the writers have often had to wrestle, If he does age, how long will his vitality and youth persist? Will his powers weaken with age? And what of Superman’s crusade against crime and injustice, is it a war he can ever win?
Since the Seventies, we’ve been comfortably presented with a minor parade of older Supermen gone gray at the temples - the Superman of Earth-2, the Superman of Kingdom Come, the Superman of Batman Beyond - but in this first foray into the concept, the Man of Steel hasn’t aged a day.
It’s the year 2143 - two hundred years into this story’s future - and Superman is not only as young and vibrant as his present-day self, but he has more leisure time; his war on crime has borne such fruit that the idea of villainy is unknown in this far-flung time. The champion Superman spends his days turning his terrific mind to scientific advancement and leisurely listening in as old acquaintances pass his legend on to younger generations.