Tested on Hickok TV-7 B/U . Hickok TV-7B/U is a mutual conductance (Gm) type tube tester. Test Result.
Item Tag: 6B4G
(3) NOS 6B4G AUDIO POWER AMPLIFIER TUBES – HOLLAND – MATCHED – TV7 TESTED
Three new old stock unbranded 6B4G tubes. Made in HOLLAND. Tested on military TV7 tube tester. With 38 being minimum reading for a good tube , these tubes read 78 , 80 , and 80. Will be shipped in new generic tube cartons. FREE U.S. SHIPPING ! Thank you for looking !!!