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Radio Valve Type ATP4, England, Mid 20th Century

Inventory Number: 70312

70312-1t 70312-4t 70312-3t 70312-2t

Date: Mid 20th Century

Maker Details: Unknown

Inscription: "E / ATP4 / ZA5502" printed on exterior surface of bulb.

Size: 110 mm in overall length (including top cap and base pins)

Materials: Glass, plastic?, steel, assorted metals.

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


Radio Valve (or Tube) Type ATP4, in plain speckled cardboard carton. Carton damaged, with quite severe mildew. Glass valve with single steel top cap and black plastic? base. With nine steel base pins and one black plastic? central base pin. One steel base pin missing.

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