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Mullard Television Valve Type PL504 With Carton, by Mullard, Britain, 20th Century

Inventory Number: 40357

40357-1t 40357-4t 40357-3t 40357-2t

Date: 20th Century

Maker Details: Signed by Mullard.

Inscription: "Mullard / PL504 / BVA [LOGO] / MADE IN GREAT BRITAIN" printed on exterior surface of bulb. "MAZDA / PL504" printed on exterior surface of carton lid.

Size: 100 mm in overall length (including top cap and base pins)

Materials: Glass, steel, assorted metals.

Other Given Number(s): Christie's 216.


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.

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