A vintage 1980s newsagents 'a Mars a day' advertising sign/light/lamp

A vintage 1980s newsagents 'a Mars  a day' advertising sign/light/lamp.
A classic piece of advertising for the 1980s that all children of the 70s and 80s will remember well.
The light/lamp has been PAT tested and is on good working order.
As this would have been displayed on a wall outside of a newsagent for many years, there is natural fading and rust to the base.