The information here is gained from
numerous sources, as there is little real documentation available.
Master sets have loudspeakers and
Sub-Stations have handsets.
Master Station - 4 key
Early model |

|
Master Station - 10 key
Early model |

|
Master Station - 15 key
Early model |

|
Master Station - 18 key
Early model |


|
Master Station - CL12
way
|

|
| Master Station - DD10
way |

|
| Master Station - DD14
way |

|
| Master Station - DD18
way |

|
Master Station - 10 way
1940 model
|

|
Sub-Station DH4A
The left hand key is missing. |

|
Sub-Station DH12A
|

|
Sub-Station DH20A-1A
|

|
Sub-Station DH20A-2A
|

|
Sub-Station DH20A-3A
|

|
Sub-Station DH20A-6A
|

|
Sub-Station DL12-12
|

|
Sub-Station DL22
|

|
Sub-Station HL4
|

|
| Sub-Station HL4-1 |


|
| Sub-Station HL4-2 |

|
| Sub-Station HL10 |

|
| Sub-Station HL10-1 |



|
| Sub-Station HL10-2 |

|
| Sub-Station HL10-3 |

|
| Sub-Station HL10-4 |

|
| Sub-Station HL14 |

|
| Sub-Station HL14-1 |

|
| Sub-Station HL14-2 |

|
| Sub-Station HL14-4 |

|
| Sub-Station HL20 |

|
| Sub-Station HL20-1 |

|
| Sub-Station HL30-1 |

|
| Sub-Station HL30-2 |

|
| Sub-Station HL30-3 |

|
Sub-Station SL4
|

|
| Sub-Station SL6-3A |

|
| Sub-Station SL10 |

|
Sub-Station SL10-2
|

|
Sub-Station SL14
|



|
Sub-Station SL14-1
|

|
Sub-Station SL14-3A
|

|
Sub-Station SL20
|

|
Sub-Station SL20-1A
|

|
Sub-Station SL20-2
|

|
Sub-Station SL20 with
round call
The green coloured key operates
round call.
|

|
Sub-Station SL43
|

|
Junior System
Two Sub-stations and a master station are shown.
The
operating key knob is missing in the pictures showing the Master
Station.
|






|
Junior Sub-Station
This instrument was located in Australia.
|

|
Junior Sub-Station
This unusual pedestal Sub-Station is dated 1911. |

|
Master Station 4-3
The two pictures show a Master Station with two key knobs and a
lamp missing. |


|
Master Station 10-1
10 way Master Station. |

|
Sub-Station Type L 4
|

|
Sub-Station Type L 6
|

|
Sub-Station Type L 11-1
Instrument is dated 1919.
|

|
Sub-Station (US) 12
Note the square key knobs
|


|
Sub-Station (US) 12-5
|


|
| Sub-Station (US) 16 |

|
| Sub-Station (US) 20-9 |

|
| Sub-Station (US) 26-12 |

|
Master Station (US)
MS13
|

|
| |
|
| |
|
| |
|