Detective Comics Vol 1 #319 - CGC 4.0

Doctor Paul Dent becomes a faceless criminal after a serious accident with a machine he created in order to erase scars from skin tissue. Adopting the alias of Dr. No-Face, he begins a crime spree whose motif is mutilating facial representations. Batman and Robin capture him, not knowing that such is part of No-Face's plan. However, after a quick investigation of the particular modus operandi, the Dynamic Duo learn that No Face is in fact the criminal known as Bart Magan, who was impersonating Dent during the experiment and after he lost his facial features, he decided to start the crime spree in order to frame Dent while he was exonerated. When his plan was finally revealed, Magan is taken to prison and Dent's name is cleared.