- Item type
- Object
- Provenance
- Presented by the Marconi Corporation.
- Primary inscriptions
- "E / ATP4 / ZA5502" printed on exterior surface of bulb. "ATP4" stamped on the carton.
- Object type
- Radio valve
- Dimensions
- Diameter: 40mm Height: 115mm
- Inventory No
- 70312
- Accession Number
- 2004-9/265
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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