Matched Pair Tung-Sol 6AK5 6J1 6J2 Vacuum Tubes NOS NIB Number Type Shoulder This nicely-illustrated story book is

This nicely-illustrated story book is in very good condition

This is a new old stock

It's a bit worn in places

These seven new old stock

new in box Sylvania 12JT6A tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair Tung-Sol 6AK5 6J1 6J2 Vacuum Tubes NOS NIB Number Type Shoulder This nicely-illustrated story book isThis new old stock, new in box matched pair of Tung Sol 6AK5 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they tested as follows: Tube One (Philco LABELED, Tung Sol MANUFACTURED) measured 30 while Tube Two measured 31 where minimum (65%) is 22 and 100% is 34. I am playing them now in my Mini 2013 as I write and they sound excellent. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES.