(1) Tested Strong and Balanced Arcturus Type 82 Tube.
The coating that you see on the inside of the tube is normal for mercury vapor rectifier tubes after heating up, and the photos were taken soon after testing was completed.
This tube tests as NOS with balanced plates.
Tested on a calibrated Hickok TV-10 military tube tester and exhibiting no shorts at 2075-2075 where 800-800 is minimum pass/good.
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