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- Fully Tested NOS NIB Telefunken Germany EF12K / EF12 Vacuum Tube
Fully Tested NOS NIB Telefunken Germany EF12K / EF12 Vacuum Tube
You don't see these every day! These are absolute beauties, true NOS NIB Telefunken tubes made in Germany. It doesn't get better than this!
All of these have been professionally tested and/or matched by Gm on a calibrated Hickok TV-7 tube tester. These are genuine NOS tubes and they will test and perform as such.