5 General Electric GE 12V6 12V6GT Vacuum Tubes Lot Of Five Pental Type Engraved These six gray glass 12BY7

These six gray glass 12BY7 / 12BY7A / 12BV7 tubes tested as follows on our Paul Hart-calibrated TV7/U where minimum (65%) is 46:

Tube One measured 68/68 while Tube Two measured 74/74 where minimum (65%) is 50/50 and 100% is 77/77

Its silkscreening is ghostly and appears to have been done for Mullard

It is probably a Mullard

5 General Electric GE 12V6 12V6GT Vacuum Tubes Lot Of Five Pental Type Engraved These six gray glass 12BY7These five GE MANUFACTURED 12V6GT power tubes were tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. They tested as follows: 55, 64, 64, 67 and 71 where minimum (65%) is 46. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS.