This L.B. wall telephone was used with Bellset No. 14 on call box cabinets in the London Stock Exchange.

These phones were powered by a local battery and a 22v DC power lead fed directly from the London Wall Telephone Exchange.

Introduced circa 1923.

Telephone includes (1928):-
2 x Cords, Instrument No. 116.
1 x Cord, Instrument No. 222.
1 x Transmitter No. 1.
1 x Receiver, Bell No. 1A.

Circuit diagram - Misc. 1066 & LD35.

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Last revised: November 20, 2021