Lansdale 12AV7 Vacuum Tube NOS NIB Black Plate For Your Univalve 12FM6 Septal There is a hairline crack

There is a hairline crack in the base of Tube Two

2 milliamps while transconductance measured 2050 micromhos

This is a Dutch auction for GE-MANUFACTURED gray plate 35W4s

new in box RCA 12JQ6 tube tested to spec on our Paul Hart-calibrated TV7/U

Lansdale 12AV7 Vacuum Tube NOS NIB Black Plate For Your Univalve 12FM6 Septal There is a hairline crackThis new old stock, new in box Lansdale MANUFACTURED, GE LABELED 12AV7 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 38 39 where minimum (65%) is 21 21. This tube has black plates; a D getter; terrific flashing and L2E date codes. Lansdale was the manufacturing arm of Philco and sold tubes to other companies not only during the transition from tubes