This is a beautiful example of a GPO 312L with drawer. The call exchange button would have been used on a shared line and is now just for show. It has been stripped down and rebuilt after each part has been cleaned and polished. The dial has also been rebuilt and the contacts cleaned and tested. Then set up on a special line simulator to allow to work on both BT and cable networks. I have fitted an electronic microphone, a GPO specification round plastic line in cord with a UK telephone plug socket and a very best British manufactured hand plaited braided handset cord to bring the speech quality up to modern standards. The handset is marked 1946 and the switch plungers are the earlier sleeved type. It has a genuine GPO No 10 alpha numeric dial. I can make a dial label with your information at no extra charge.