2 x JAN CRC 6SN7-GT RCA VT-231 Tubes
Made in USA
Smoked Grey Glass
Matching Codes K3E
Tested on enhanced Triplet E3444 Laboratory Tester
2980/2890 micromhos @ 9.8/9.0 mA
2600/2750 micromhos @ 6.7/7.3 mA
Bogey(100%) = 2600/2600 micromhos @ 9.0/9.0 mA
I do combine S&H when possible