House ad for Superman: The Secret Years #1 (February 1985); printed in World's Finest Comics #312 (February 1985)
Ad art: pencils by Curt Swan (?), inks by Kurt Schaffenberger (?)
It's probably best known for a quartet of very stylized Frank Miller covers that made me think "And yet they redrew Kirby and Toth's Superman faces???".
Covers of Superman: The Secret Years #1-4 (February-June 1985), pencils and inks by Frank Miller