Picked up from a post of Flicker
Notice the presence of two ciphers – one for King George V and the other for Saorstát Eireann (Irish Free State).
The Irish Free State (Saorstát Eireann) came into existence in 1922 with the signing of the Anglo-Irish Treaty and continued until 1937, when it became a Republic. Prior to 1922, Ireland had been part of the United Kingdom and already had a well-established postal system based on the English model, complete with post boxes going back the Victorian era. Fortunately, there are still a great many pre-independence post boxes to be seen throughout Ireland and their variety make them quite an interesting subject.
So when the Irish Free State came into being, the new Irish Post Office had to adapt all the existing post boxes. The first and most obvious was to repaint them all green, the national colour. Then there was the question of the Royal cipher cast onto the existing boxes. Some boxes had the entire cipher (regal initials crown) erased by grinding off the metal, others just the initials but most retained the Royal cipher, as in this case. Another adaptation was the addition of the Saorstát Eireann cipher – the SE crest. This comprised of large initials SE contained within a round decorated boarder surmounted by the harp. In this instance, the wallbox appears to have been fitted with a replacement door cast with the SE cipher. In some other cases, a casting of the SE cipher was welded on.
This wall box was probably made during the 1920’s and cast by W.T. Allen & Co of London. W.T. Allen & Co were an iron foundry that produce a great many post boxes for the British Isles between 1886 and 1980, when they stopped making wallboxes. The words POST OFFICE are cast onto the rainhood above the slot. Unfortunately, many layers of paint applied over the years have obscured the fine details of both the Royal and SE ciphers.