My maintenance supervisor brought this in for me today. It is by far the coolest thing that he’s given me, and he’s given me plenty of interesting items. I guess he knows how much I appreciate these vintage relics. His dad removed it from the Pennsylvania Rail Road roundhouse in Northumberland PA before it was demolished in the 70’s. The binder clips both swing out together when you move one. The paper punch located on the bottom is pretty sweet too. The paper I punched came from him as well as part of the railroad collection he inherited. This will make a great notepad holder on my desk.