General Electric JAN.CLRV.12SN7GT
These tubes are new old stock in original boxes with matching date codes.
Tubes are tested for mutual conductance, shorts and gas on a Hickok 533a tube tester.
#1 Triode 1 3000/2600 Gm
Triode 2 2900/2600 Gm
#2 Triode 1 3050/2600 Gm
Triode 2 2950/2600 Gm