These old electromechanical arrival/departures boards have become scarce.
I exposed these photos at Philadelphia’s 30th Street Station in early December 2016.
My train had arrived a few minutes late. Ironically, it was shown as ‘departed’ although it was still on the platform at the time I made these exposures.
Maybe worth a little video with sound – the clattering noise as the plates turn over when an update occurs is very distinctive, as is the drama of a full update of the board. There were some huge installations in Britain, several times larger than Phildelphia’s, that were always entertaining to watch.