Pair of RCA 6BZ6 vacuum tubes new old stock
Tubes are identical in construction  
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.
Tested at: 67 plate current 15.2
                 56  plate current 12.2
Average new: 53
Minimum good: 32
The minimum is equal to 65% of the life of the tube.
Tested for shorts and gas.
Date code: - 
NOS/Used: new
Construction: round getters
Glass: smoked
Base: -
30-day free return. 
Your items will be packed very well and shipped promptly.
We combine shipping on tubes.
Always glad to answer any questions.
Thanks for looking!