Original: Batman #100 (1956), Superman #100 (1955)
Tribute: Cerebus #100 (July 1987) by Dave Sim
(Click Image To Enlarge)DAVE SIM:
(from Cerebus Wiki)
Getting to issue #100 was more of a big deal to me. It seemed completely impossible. That's why I did the same motif that DC used for Superman #100 in 1954 or '55 and Batman #100 in 1956 - a composite of the covers of issues one, twenty-five, fifty, and seventy-five.