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RCA Radiotron Cunningham Radio Tube Type 5Z3 With Carton, by RCA, New Jersey, 20th Century
Inventory Number: 22875
Date: 20th Century
Maker Details: Signed by RCA.
Inscription: "CUNNINGHAM / RADIOTRON / RCA / RADIO TUBE" printed on exterior surface of carton side. See Documents for other inscriptions.
Size: 155 mm in overall length (carton)
Materials: Glass, ribbon, steel, plastic?, assorted metals.
Other Given Number(s): Christie's 216.
Notes:
RCA Radiotron Rectifier Radio Tube (or Valve) Type 5Z3, in red, white and red printed cardboard carton. Glass tube with black plastic? base and four steel UX4 base pins. Carton unsealed.
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