This is a Bardic BR 4 aspect signalling lamp. It is untested as they don't seem to take a normal battery.
VINTAGE BARDIC BRITISH RAIL TORCH - SPARES REPAIRS- UNTESTED
Vintage BR British Rail BARDIC SIGNAL LAMP / Lantern.4-Colour Lens.
BARDIC BRITISH RAIL TRAIN DRIVERS/ MilitaryTORCH LAMP S2
BARDIC BRITISH RAIL TRAIN DRIVERS TORCH LAMP STAMPED B. R.
