GEC K 75
This instrument consists of 'Hunningscone-Deckert'
microphone, induction coil, double pole 'ring' receiver, double magnet generator, polarised call bell and automatic switch
hook, mounted in a solid Walnut case.
Price in 1904 - £1.19.6
Taken from the G.E.C. Illustrated Telephone Catalogue 9th edition (1904)
Last revised: January 23, 2011