Swiveling Bit Night Watchman Key
This unusual key features a
swiveling bit and was used as a watchman clock security system key. A watchclock allows users to input a key such as this to manually punch their number on a pre-time stamped piece of paper during their regular patrols. It is likely from England. In England, they were also used by train engineers to ensure train schedules were maintained by marking when the engineers left each station. The bit reads either 55 or 22. I have seen others with different numbers on it as well. The key appears to be made of brass.
Side View of Key:
View of the other side:
View of the swiveled bit: