Matched Pair Transleteronic 6AK5 6J1 6J2 Vacuum Tubes NOS NIB Novar T07 Tube Two lacks most markings

Tube Two lacks most markings and I believe it was military surplus and had its markings removed as memories of the war were a little too fresh

almost-perfectly-matched pair of Sylvania-MANUFACTURED 6BL7GTA dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

The TV7- tubes measured 60

top mica spacers with smooth-sided rectangular bottom mica spacers

52/34 and 56/47 where minimum (65%) is 40/45 and 100% is 62/69

Matched Pair Transleteronic 6AK5 6J1 6J2 Vacuum Tubes NOS NIB Novar T07 Tube Two lacks most markingsThis new old stock, new in box matched pair of Transleteronic 6AK5 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 27 while Tube Two measured 28 where minimum (65%) is 22. These tubes are the equivalent of the Chinese Russian 6J1 and 6J2. I am playing them now in my Mini 2013 as I write and they sound excellent. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S