Tested on a Hickok TV-3 military tester that has been calibrated, just to make sure. Also tested in a 1930's Stromberg Carlson radio for brightness. These are very hard to find. Many other lots of tubes for sale this week. The item "One, New in Box, Zenith 6T5, target eye tube, tested bright, 6T5" is in sale since Saturday, October 17, 2020.
This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "igolioto" and is located in Whippany, New Jersey. This item can be shipped worldwide.