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Description
"Licensed for Amateur or Experimental Use Only" on base. Faint remains of the RCA and GE logos etched on glass. The number 414 or H14 appears to be painted on inside glass element. Manufactured by General Electric for RCA.
Type
image
Identifier
D5ADD6FB-66F1-45D8-8EA6-187962855210 2003-1-849
Subject
Vacuum-tubes Nineteen twenties Triodes Radio Corporation of America General Electric Company
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