Tubes are identical in construction
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.Tested at: 63/59 plate current 13.3/11/7
72/59 plate current 15.9/13.8
61/55 plate current 12.7/9.8
Average new: 53/53
Minimum good: 32/32
The minimum is equal to 65% of the life of the tube.
Tested for shorts and gas.
Date code: MT
NOS/Used: new
Construction: black plate round getter
Glass: clear chrome top
Base: -
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!