Detective Comics 338 (Apr 1965) VG/FI (5.0)

Writing in blue ink on front cover near issue number. 

Batman's Power-Packed Punch!

Script: Gardner Fox

Pencils: Sheldon Moldoff (as Bob Kane)

Inks: Joe Giella

Characters: Batman [Bruce Wayne]; Robin [Dick Grayson]; Orval Manning (first appearance); David; Bull Fleming (first appearance, villain); Chuck (first appearance, villain)

Synopsis: A chemical spills on Bruce Wayne's arm, giving Batman super strength in his right arm.