I recently received an undated photograph of Walkley Police Station. Comparing it with the building in its "current" state on Google Earth it looks remarkably unchanged externally. However as the photo is undated I am now seeking assistance in dating it please. In thee photograph all the Policemen wearing helmets have no badges on their helmets. The earliest police helmet plate for Sheffield that I am aware of was worn from 1865, so potentially this dates the photograph as pre-1865.