(With Induction Coil)
The Hunningscone-Deckert Wall Telephone without Bell
This instrument is of exactly similar construction to K
7820, but with two extra terminals for the bell, in place of the bell usually fitted.
This set is intended to be used in places where the ordinary bell is not large enough, or where the
bell is required to be placed at a distance away from the
Price in 1908 was £1.5.0
Taken from the GEC Telephone Catalogue, K Section, 10th Edition, 1908