One, new in box, RCA 5U4G tube. Black plates, upper getter. Firm base, excellent silvering. Tested on a Hickok TV-3 military tester that has been calibrated, just to make sure. Tube tests at 168-166 where pass/fail is 80. These are relative numbers and do not indicate percentages. Tube has the date code, "MI", JUly 1961. The box, as always, is original. 

Many other lots of tubes for sale this week.

Shipping is free within the continental US.  Elsewhere- exact postage only, no packing fee.