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 (US) - 4 key
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Master Station - DD - 10 key
Early model |

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Master Station - DD - 15 key
Early model |

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Master Station - DD - 18 key
Early model |


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Master Station - CL12
|

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| Master Station - DD - 10
key |

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| Master Station - DD - 18
key with handset |

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| Master Station - DD - 18
key |

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Master Station (US) - 10 way
1940 model
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Sub-Station HT2A
2 Master and 1 Automatic.
The left hand key is missing. |

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Sub-Station DHL14/5A
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Sub-Station DHL20/2A
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Sub-Station DHL20/1A
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Sub-Station DHL20/2A
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Sub-Station DH20/5A
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Sub-Station DL12
"Silent Master"
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Master Station DL22
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Sub-Station DHL4/1
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Sub-Station HL4-1
Sub-station HK4
Rear view |


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| Sub-Station HL4/2 |

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Sub-Station DHL10/1
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Sub-Station HL10/1
Sub-Station HL10/1 |


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| Sub-Station HL10/2 |

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| Sub-Station HL10/3 |

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| Sub-Station HL10/4 |

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| Sub-Station HK14 |

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| Sub-Station HL14/1 |

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| Sub-Station HL14-2 |

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| Sub-Station HL14/4 |

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| Sub-Station DHK4 |

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| Sub-Station DHL10/1 |

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| Sub-Station DHL20/6 |

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| Sub-Station HL20/1 |

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| Sub-Station HL30/1 |

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| Sub-Station HL30/2 |

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| Sub-Station HL30/3 |

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Sub-Station SLK4
|

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Sub-Station SLT2A
1 master and 1 Automatic. |

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| Sub-Station SL10/1 |

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| Sub-Station SL10/1 |

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Sub-Station SL10/2
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Sub-Station SL14/1
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Sub-Station SL14/1
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Sub-Station SL14/2A
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Sub-Station SL20/1 with
Round Call
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Sub-Station SL20/1A
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Sub-Station HL20/2
|

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Sub-Station SL20/1 with
round call
The green coloured key operates
round call.
|

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Sub-Station SL42/4
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Junior System (US)
Two Sub-stations and a master station are shown.
The
operating key knob is missing in the pictures showing the Master
Station.
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Sub-Station HTB
This instrument was located in Australia.
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Sub-Station (US)
This unusual pedestal Sub-Station is dated 1911. |

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Master Station DL6
The two pictures show a Master Station with two key knobs and a
lamp missing. |


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Sub-Station 10/1
Early "Block Type". |

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Sub-Station Type L 4
|

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Sub-Station Type L 6
Early 6 way sub station "Block type".
|

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Sub-Station Type L 11-1
Instrument is dated 1919.
Probably US.
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Sub-Station (US) 12-5
Note the square key knobs
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Sub-Station (US) 12-5-2
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| Sub-Station (US) 16 |

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| Sub-Station (US) 20-9 |

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| Sub-Station (US) 26-12 |

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Sub-Station (US)
MS13
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