GEC K 910
TELEPHONES FOR TRACTION SYSTEMS
Generator and Call Key
Consisting of Triple Magnet Generator with Double Line Ringing Key, for use in conjunction with K 905 , for ringing up sub-stations.
Price was £2.10.0.
Taken from the G.E.C. Illustrated Telephone Catalogue 9th edition (1904)
Last revised: January 23, 2011