This is a rare item to find. It is a GPO 706L made from an acrylic material. These were only made until around 1963 and usually re cased when refurbished by the GPO. I bought two together one dated 1961 and this one dated 1963 and in wonderful condition. It has been stripped down and re built after each part has been cleaned and polished. The dial contacts and internals have all cleaned. It has been fitted with a best quality electronic microphone and will dial out and receive perfectly. I can make a dial label with your information at no extra charge.