Siemens Brothers not only designed the 162/232 '200 type' telephone for the GPO, but also produced their own proprietary version of the Neophone with an integral bell, sometimes called the Universal Neophone. This was Tele 312 in Siemens Brothers' numbering scheme. It was never used by the GPO. This example shows the "Siemens Brothers London" logo on the front. Visually, it is very similar to the 200 type but is has a broader base and higher body in order to house the bell. The pyramid body also has sharper edges. The photo below shows a comparison with a Tele 232. Both types were known as the Neophone.
