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| COMMON BATTERY INSTRUMENTS WALL TELEPHONE FOR COMMON BATTERY WORKING No. 366
Polished Walnut backboard. Weight 10.10 lbs. Price £4 2s. Renumbered later as the CD140. Taken from the Ericsson Telephone Catalogue 1903 and in the 1911 catalogue as the CD140 |
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Last revised: October 01, 2019FM2 |
With hand micro-telephone specially constructed for use with a common
battery, and with a 1000 ohm bell and a condenser of two microfarads capacity.