(1) Tested Balanced Tung Sol JAN-CTL-6SL7WGT Mil Spec Tube.
Silver Letters. Date Code 6206.
Balanced mutual conductance (Gm)with gray 4 hole ladder plates, top O ring halo getter and double sawtooth mica spacers. The brown marbled base makes the tube even more visually pleasing.
Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:
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