Catalogue
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RCA Radiotron Cunningham Radio Tube Type 6B7, by RCA, USA, 20th Century
Inventory Number: 15130
Date: 20th Century
Maker Details: Signed by RCA.
Inscription: "RCA Cunningham / Radiotron" etched into base surface. "MADE IN / U.S.A. / 6B7" printed on exterior surface of bulb. "JB" etched into underside of base.
Size: 140 mm in overall length (wrapping)
Materials: Glass, plastic?, steel, assorted metals.
Other Given Number(s): Christie's 216.
Notes:
RCA Radiotron Radio Tube (or Valve) Type 6B7, in plain umarked cardboard wrapping. Glass tube with black plastic? base, one steel top cap, and eight steel base pins. Lower part of tube blackened and silvered, probably due to use.
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