Radio Valve R5V, by Marconi Osram Valve Co., London, c. 1923 | |
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| Inventory Number: | 30209 |
| Object Type: | |
| Place Created: | London England United Kingdom Europe |
| Accession Number: | |
| Brief Description: | Dull emitter R5V, pipped, by Osram for Marconi, with nickel base. Fitted into V2A receiver. |
| Primary Inscriptions: | Signed: "Osram" and BBC stamp. |
| Provenance: | Not ascertained. |
| Collection Group: | |
| Material(s): |
Glass and nickel |
Narratives | |
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