Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filaments NOS NIB Hytron 6V6GT an O getter and matte-gray

an O getter and matte-gray plates

foil getters and cross-shaped-top and rectangular-bottom spacers

5113 date codes and nice flashing

new in box GE 1G3GT / 1B3GT rectifier tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube Two measured 25

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filaments NOS NIB Hytron 6V6GT an O getter and matte-grayThis new old stock, new in box matched pair of GE 6SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 76 78 for Tube One and 77 82 for Tube Two where minimum (65%) is 50 50 and 100% is 77 77. They have additional filaments across the top of the tube for an enhanced light show; side O getters; copper support rods; a round and square hole in each