We believe this to be circa 1930's and that it would have been originally fitted to a Ford or Dodge (Dodge brothers) vehicle of the period.

There is no lens so it is the main body of the light as seen in the pictures that's for sale here.
Overall condition I would describe as good to very good there is some scratching/marks to the chrome and the lower part of the rim is rusted (this is normally hidden behind the chrome bezel but we have removed this in some photos' so you can see clearly) 
We have given it a quick wipe for the photos' so that you can see the condition, as it was very dusty from storage, (all photos' are zoomable) but have made no attempt to properly clean or restore the item. 
FREE UK MAINLAND POSTAGE.
Thanks'

Tom.