Detex Watchclock Station, Cast Iron, with Key

This is a Detex Watchclock Station, a wall-mounted cast iron box used as part of an old night watchman's clock system. A security guard would carry a portable time-recording clock on their patrol route, stopping at stations like this one to insert the numbered key on its attached chain, which stamped the time onto a paper disc inside the clock. This created a verifiable record that the watchman had completed each checkpoint on schedule.

See Condition Notes below for detail.