These are SUPERMAN (Key Issues), Copper Age, including SUPERMAN Issue #9, (1987), featuring a JOKER Cover, Issue #50 (Newsstand Edition, 1990), where CLARK KENT Propose to LOIS LANE & she accepts, #53, & ACTION COMICS # 662, (1991), where CLARK KENT finally reveals his identity to LOIS LANE. These are all Unread, High Grade Copies, NM, 9.6-9.8.