HERE FOR SALE IS A VINTAGE COSSOR 6SN7GT VALVE. WITH BLACK T SHAPED PLATES AND BASE GETTER. THE VALVE TESTS VERY STRONG AND BALANCED ON MY HICKOK VALVE TESTER.

HICKOK TEST RESULTS ARE AS FOLLOWS:

GAS TEST:     PASSED GOOD

SHORT TEST: PASSED GOOD

NOISE TEST:  PASSED GOOD

VALVE 1.

Triode 1:  gm: 2.7mA/V  (2700 micromhos)....104%

Triode 2:  gm: 2.6mA/V  (2800 micromhos)....108%

• MINIMUM GOOD gm: 1.3mA/V (1300 micromhos)
• HICKOK NEW AVERAGE  BOOK SPEC:  gm 2.6mA/V (2600 micromhos)....100%
• FOR VT-231 / 6SN7GT.                              gm 2.6mA/V (2600 micromhos)....100%