Pair of Sylvania 6GN8-6EB8 vacuum tubes
Tubes are identical in construction  
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.
Tested at: 65/51 62/45 
Average new: 69/62
Minimum good: 42/38 
The minimum is equal to 65% of the life of the tube.
Tested for shorts and gas.
Date code: KCR BC, AK AAC
Construction: gray plate round getter copper rods 
Glass: clear chrome top
Base: 9 pin
Not tested for sound, noise or performance quality in any type of equipment.
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!