Climax Safe Key
One of the first “detector” locks, these keys date to the mid to late 19th
century. Detector locks were invented to let the owner of a safe know if someone had tampered with the lock, or had tried to use a copied key in the
safe. Often, the lock would capture the fake key, and the safe would have to be completely reworked to once again function. Most of these keys are
stamped “Cotterill, Birmingham” or sometimes “Patent Acme”. All of these keys have moderate to heavy rust.