Tubes are identical in construction
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.Tested at: 84/87 plate current 9.2/9.6
92/97 plate current 10.1/10.1
Average new: 88/88
Minimum good: 50/50
The minimum is equal to 65% of the life of the tube.
Tested for shorts and gas.
Date code: 5-35 188-5, 57-26 118-5
NOS/Used: used
Construction: gray plate horseshoe getter copper rods
Glass: clear
Base: tight
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!