Centenary
Neophone, also known as the Horseshoe telephone. Originally a Siemens
Brothers telephone.
There was also a Kingston Communications variant called the model 904 (non-regulated and regulated) and 908 (non-regulated type).
There is normally a circuit diagram in each phone - look under the printed wiring board.
For more information see also Siemens Bros Neophone.
Click here for the circuit diagrams
Click here for conversion to new plug and socket
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The wall version of the Centenary Neophone - Model 980/981

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Last revised September 20, 2009
FM2