Tubes are identical in construction
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.Tested at: 85 plate current 9.3
80 plate current 8.8
Minimum good: 58
The minimum is equal to 65% of the life of the tube.
Tested for shorts and gas.
Date code: AKC 6925, unreadable Construction: copper rods gray plate
Glass: clear
Base: 7 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!