Brimar England 6V6GT Oblong Getter Black Glass Valve Tube Used Tested (KP5)
Brimar England 6V6GT Hanging Ring Getter Black Glass Valve Tube Used Tested (#5). Hickok 1-177-B = 2600 mhos mutual conductance Hickok Book average new = 3,000 mhos mutual conductance No gas shorts grid emissions Firm bases