A crystal/valve receiver/amplifier
by Walters Electrical Manufacturing Co. Ltd. London, with Crystal set No. 1 and single-valve amplifier units in common mahogany case, Marconi R valve, BBC transfer and GPO lead seal and ticket dated 23/1/23 -- 12in. (30.5cm.) wide (old crack in panel of amplifier) , with ebonite plinth marked Donated by Walter's Electrical Mfg. Co. Ltd. London, W.10 Manufacturers
Lot Essay
The ticket and lead seal indicate that this was the example submitted to the Post Office for registration.
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Mechanical Music, Radios and Technical Apparatus