BATMAN (1940) #164

A double-action Batman and Robin thriller… »Two-way gem caper » Guest-starring The Hootenanny Hotshots! This issue sees a whole host of changes to the Batman title – and its not only the yellow circle around the black Bat-insignia on Batman’s chest. This issue marks a shift in emphasis from Batman and Robin battling aliens to a more detective orientated run. This is the first issue that featured the secret wall panel that led to an automatic elevator to the Batcave. No more secret entrance via the grandfather clock! At the Bottom of the elevator Bruce reveals the new sports car style Batmobile which exited the Batcave via an automatic door on a hillside.…