Summary
Triode, maker and type unknown. 4 volt indirectly heated cathode.
The valve however looks exactly like an Osram ML4, Mazda AC/P or British Navy type NR57.
Z8154 may be a serial number or factory code
Physical Description
Shouldered glass bulb mounted on a 5 pin European style base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Unknown Acquisition Method from Unknown Source, 1981
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Date Manufactured
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Inscriptions
Bulb: Z8154 Paper label on base: Z8154 Base: None
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Classification
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Category
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Discipline
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Type of item
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Overall Dimensions
117 mm (Length), 44 mm (Outside Diameter)
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Keywords