About Post Boxes
Although Britain is famous for its red post boxes what is not widely known is that each post box has a cypher which refers to the King or Queen in whose reign it was erected.
Starting with Queen Victoria, her son Edward VII, his second son George V, his eldest son Edward VIII (not many of these), Edward's brother, George VI (subject of the film "The King's Speech") and George's eldest daughter Elizabeth II.
The box on the right was erected in the reign of Edward VII. See also the image to it's right which is a close up of the cypher.
As you can see it needs painting.