4 Sylvania 6N7 Vacuum Tubes Shoulder ST Style Lot Of Four 6K5GT Grid Cap This tube has 439 C

This tube has 439 C date codes

Tubes Two through Seven tested 40/38

There is also a shield between the triodes for reduced cross talk

Transconductance measured 41

top mica spacer

4 Sylvania 6N7 Vacuum Tubes Shoulder ST Style Lot Of Four 6K5GT Grid Cap This tube has 439 CThis lot of four Sylvania MANUFACTURED 6N7 6N7G tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measure as follows: 40 42, 51 52, 55 57 and 57 62 respectively. They have old fashioned "Coke" bottle; black plates; beautiful, copious flashing and wire snubbers for increased rigidity for lowered microphonics. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE