For your consideration, we are offering this fine vintage Detex Corporation Guardsman watchclock. This would be carried by a security guard as he made his rounds, using numbered keys mounted at specific locations in his AO. Each time a key was used it would imprint the key number on a strip of paper locked inside the watchclock, giving the supervisor a clear confirmation that the guard completed his rounds completely and on schedule. This particular piece is in very nice condition, with the glass face being completely intact, the leather case is thick and solid, and the keyhole cover is not bent or damaged. The original instructions are still in the leather case! This measures 6 1/2″ round by 2 1/2″ thick. There are no keys included. This is tested and runs.