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RCA Radiotron Radio Tube Type 6D6, by RCA, USA, 20th Century

Inventory Number: 71527

Date: 20th Century

Maker Details: Signed by RCA.

Inscription: "6D6" etched on exterior surface of bulb. "RAC Radiotron / MADE IN U.S.A." etched on base.

Size: 125 mm in overall length (including top cap and base pins)

Materials: Plastic?, steel, glass, assorted metals.

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


RCA Radiotron Radio Tube (or Valve) Type 6D6, in plain cardboard wrapping. Glass valve with single steel top cap, black plastic? base and six steel base pins. Most of tube silvered and blackened, probably due to use.

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