Matched Pair General Electric GE 12SL7 12SL7GT Vacuum Tubes NOS NIB With God This pressing has light surface

This pressing has light surface noise audible in quiet passages

These two photomultiplier tubes could not be tested and are sold as-is

THERE IS RISK IN LIFE

and if it is

Matched Pair General Electric GE 12SL7 12SL7GT Vacuum Tubes NOS NIB With God This pressing has light surfaceThis new old stock, new in box (for Tube One) matched pair of GE MANUFACTURED 12SL7 12SL7GT dual triodes was tested on our Pau Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 38 38 for Tube One (CBS labeled) and 38 42 for Tube Two where minimum (65%) is 32 32. These tubes have copious flashing, side, harp getters, steel plates and steel support rods. WE HAVE SCORES OF THOUSANDS OF