Supersedes Telephone No. 17.

Also known as the Post Office telephone for Granular Transmitter 'C' (GTC).

Wooden wall telephone used in CBS areas and long distance party lines.

Uses a Deckert transmitter but may be converted to a transmitter inset - Transmitter No. 3.

The GPO Stores Rate Book 1928 advises that this telephone was used on Wallboards, telephone, with fire-signal, London Fire Brigade.

This telephone was not available in the 1946 Rate Book.

Used on Wallboards., telephone., with fire-signal, M.F.B.

1 x Coil, Induction, No. 1.
1 x Receiver, Bell, No. 1A or No. 2B.
1 x Cord, inst., No. 222.
1 x Transmitter. No.3.

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Last revised: September 18, 2019