Chatham JAN CAHG 5R4WGY vacuum tube 
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.
Tested at: 52/56
Average new: 60/60
Minimum good: 40/40
The minimum is equal to 65% of the life of the tube.
Tested for shorts and gas.
Date code: -
NOS/Used: used 
Construction: black plate 
Glass: clear no burn marks
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!