Matched Pair General Electric GE 6C4 6C4WA Vacuum Tubes Milspec NOS NIB RCA 6H6 6H6GT NOS Tube One measured 47/44 while

Tube One measured 47/44 while Tube Two measured 48/43 where minimum (65%) is 25/25 and 100% is 38

They are still stapled in their boxes

They measured (from left to right) 27

It had no shorts or gas and measured 52/52 for Tube One and 56/56 for Tube Twoo where minimum (65%) is 40/40 and 100% is 62/62

The diodes measured 78 and 74

Matched Pair General Electric GE 6C4 6C4WA Vacuum Tubes Milspec NOS NIB RCA 6H6 6H6GT NOS Tube One measured 47/44 whileThis perfectly matched pair of new old stock, new in box milspec GE 6C4 6C4WA triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Both tubes measured 69 where minimum (65%) is 55. They have gray plates; top O getters and two additional support rods for increased ruggedness and microphony suppression. These tubes have acid etched codes and designations as well as silk screened 67 05 67