Marconi's Wireless Telegraph Company Limited, Manufacturer

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Maker and Role
Marconi's Wireless Telegraph Company Limited, Manufacturer
Glass bulb with gritty metal composite covering. Black cap on top with screw top. Black bakelite base with 5 metal pins. Metal bracket clipped to the side.
Processed Material/Glass
Processed Material/Synthetic/Plastic/Bakelite
Processed Material/Metal
Signature/Marks and Type
Made in England / patent Printed
Accession No
Credit Line
Marconi's Wireless Telegraph Company Limited. Valve, 1978.1608. The Museum of Transport and Technology (MOTAT).

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