Tubes are identical in construction.
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.Tested at: 108/108 plate current 12.2/12.6
92/93 plate current 10/10.2
Average new: 83/83
Minimum good: 50/50
The minimum is equal to 65% of the life of the tube.
Tested for shorts and gas.
Date code: FC, FI box date 4-70
NOS/Used: new
Construction: gray plate round side getter
Glass: clear
Base: 9 pin
30-day free return.
We combine shipping $1.00 for each extra tube purchase.Your items will be packed very well and shipped promptly.
Always glad to answer any questions.
Thanks for looking!