Vintage Lucas Spotlight FT.37 King of the Road

This light is pretty damaged and in the condition as per the pictures below.  Please look at them carefully and if you would like to ask any questions please do.  Approx 17cms diameter.   No glass.

Taken from Internet:

Original description by Lucas:

FT37 “Passlight” and fog lamp. Projects a powerful, broad, flat topped beam. No upward light or back-glare.