This is a NOS RCA 6JB6A beam power pentode electron tube (also called a valve).It is a Novar 9-pin base tube designed primarily for use in color television receivers as a horizontal deflection (line output) amplifier. The tube was manufactured in the United States by RCA under the Radiotron brand. The original box is included with clear “RCA” and “6JB6A” markings.Key specs (typical):Estimated production year: Circa 1960s.

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