what does er stand for on post boxes
Pillar box In Scotland there were protests when the first boxes made in the reign of Elizabeth II were produced. These bore the cypher "E II R" but there were objections because Queen Elizabeth is the first Queen of Scotland and of the United Kingdom to bear that name, Elizabeth I having been Queen of England only. After several E II R pillar boxes were blown up by improvised explosive devices, the General Post Office (as it was at that time) replaced them with ones which only bore the Crown of Scotland and no royal cypher. Red telephone boxes or kiosks of type K6 were also treated in the same way.