Matched Pair RCA 12J5 12J5GT Vacuum Tubes NOS NIB Social Change In These matched pair of engraved-base

These matched pair of engraved-base

This Philco globe / balloon-style bottle number 36 tube tested 24 on our Paul Hart-calibrated TV7/U where minimum (65%) is 26 and 100% is 40

new in box Sylvania 2A4G tube tested to spec

This lot of three Sylvania 12Q7G tubes tested to spec on our Paul Hart-calibrated TV7/U

anode radiators for cooler operation and longer tube life and gray and silver bottles

Matched Pair RCA 12J5 12J5GT Vacuum Tubes NOS NIB Social Change In These matched pair of engraved-baseThis new old stock, new in box (for Tube Two) matched pair of RCA 12J5GT triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 81 while Tube Two measured 88. Minimum (65%) is 50. They have tall bases; medium bottles; dimple getters; black ladder plates; excellent flashing and copper support rods. One of the tubes has an inert, glass chip inside. WE HAVE SCORES OF