RAYTHEON 6B4G (2A3=6.3V) PAIR Tubes NOS NIB AMPLITREX ⚜VACUUM TUBE⚜

⚜RAYTHEON 6B4G ⚜. (2A3=TO 6.3V). TESTED AMPLITREX FOR mA & mAV. These valves are built in the USA.

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