- Item type
- Object
- Makers
- Mullard
- Provenance
- Presented by the Marconi Corporation.
- Primary inscriptions
- "Mullard / PL504 / BVA [LOGO] / MADE IN GREAT BRITAIN" printed on exterior surface of bulb. "MAZDA / PL504" printed on exterior surface of carton lid.
- Object type
- Radio valve
- Dimensions
- Diameter: 30mm Height: 100mm Weight: 0.05kg
- Inventory No
- 40357
- Accession Number
- 2004-9/279
Description
Television Pentode Line Output Valve (or Tube) Type PL504, in associated blue, white and black Mazda printed cardboard carton. Glass valve without base, with single steel top cap and nine steel base pins. Strangely, valve is branded Mullard, yet associated box is branded Mazda. With BVA (British Radio Valve Manufacturers Association) stamp on valve surface.
Related Items
More related items
Mullard Radio Valve Type ECC35 and carton, by Mullard, Britain, 20th CenturyInventory Number 96920
Mullard Radio Valve Type EF37A with carton, by Mullard, English, Mid 20th CenturyInventory Number 69132
Mullard Radio Valve Type PY33, by Mullard, Britain, 1960sInventory Number 93858
Mullard Wecovalve Radio Valve Peanut Type With Carton, by Mullard, English, c. 1920Inventory Number 27364