Marconi Osram thermionic triode valve

Made:
1923 in England
Marconi Osram thermionic triode valve

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Marconi Osram thermionic triode valve 2431M

Details

Category:
Radio Communication
Object Number:
Y7001.606.1
Materials:
glass, metal (unknown) and plastic (unidentified)
Measurements:
overall: 89 mm 34 mm,
type:
triode valve and thermionic valve

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