6EM5 NOS Sylvania vintage radio audio amplifier vacuum tubes 4 valves USA 6EM5
Tubes grey smooth plates, top O getters, tubes tests: 96, 90, 96, 94 %. Price is for all tubes pictured.
Tubes grey smooth plates, top O getters, tubes tests: 96, 90, 96, 94 %. Price is for all tubes pictured.
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