- Item type
- Object
- Makers
- Marconiphone Co. Ltd
- Provenance
- Presented by the Marconi Corporation.
- Primary inscriptions
- "THE MARCONIPHONE CO LTD / MARCONI / B.V.A." printed on transfer attached to exterior surface of bulb.
- Object type
- Radio valve
- Dimensions
- Diameter: 50mm Height: 110mm Weight: 0.05kg
- Inventory No
- 87176
- Accession Number
- 2004-9/343
Description
Marconi Radio Valve in glass balloon envelope with partially silvered lower surface, probably from manufacturing process. With polished black plastic? base and six steel base pins. One base pin missing. Marconiphone Co. Ltd. was founded in December 1923 so valve can be dated post-1923.
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