Catalogue
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Radio Valve Type ATP4, England, Mid 20th Century
Inventory Number: 15492
Date: Mid 20th Century
Maker Details: Unknown
Inscription: "E / ATP4 / ZA5002" stamped 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.
Notes:
Radio Valve (or Tube) Type ATP4, in plain speckled cardboard carton. Carton is damaged and has 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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