- Item type
- Object
- Provenance
- Presented by the Marconi Corporation.
- Primary inscriptions
- "E / ATP4 / ZA5002" stamped on exterior surface of bulb.
- Object type
- Radio valve
- Dimensions
- Diameter: 40mm Height: 115mm
- Inventory No
- 15492
- Accession Number
- 2004-9/238
Description
Radio Valve (or Tube) Type ATP4, in plain speckled cardboard carton. Glass valve with single steel top cap and black plastic? base. With nine steel base pins and one black plastic? central base pin.
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