Batman #426 NM (9.4)
Batman Death in the Family part 1, leading to the death of Jason Todd at the hands of the Joker
Batman #429 VF+ (8.5)
Batman Death in the Family part 4, aftermath of the death of Jason Todd at the hands of the Joker
Batman #440 (Newsstand edition) VF/NM (9.0)
Batman cover and story, Tim Drake appears in cameo
Batman #441 (Newsstand edition) NM (9.4)
Batman * Robin cover and story, 1st Tim Drake cover and story
Batman #441 NM+ (9.6)
Batman & Robin cover and story, 1st Tim Drake cover and story, might make 9.8
Batman #442 (Newsstand) CGC 9.8
Classic Robin cover and story by George Perez, 1st appearance of Tim Drake in Robin costume, Batman, Nightwing, and Robin vs. Two Face story
Batman #451 NM/M (9.8)
Batman vs. the Joker cover and story, very nice issue
Batman #457 NM (9.4)
Tim Drake officially becomes Robin, Batman and Robin vs. the Scarecrow cover and story