It is missing the one lense but still a nice display piece... This is a vintage British Railway (BR) guards van lamp. These lamps were used on trains for signalling and identification purposes. Function: Primarily used by guards in the brake vans of trains, serving as a tail lamp or for signalling. Design: Features a large, convex lens on the front and often a smaller lens on the rear or side. Construction: Typically made of black-painted metal with a sturdy carrying handle. Mechanism: Originally an oil lamp, it would have contained a reservoir and burner for illumination