The one that tests at 57 is good, the one that tests at 27 is probably ok, and the one that tests at 2 is probably bad. Please see my pictures for details. If you have any questions, please ask. I have more tubes and other vintage electronics listed--feel free to take a look! The item "3 Vintage Genalex Gold Lion KT-88 Tubes Black Plate Metal Bases 6550 TESTED" is in sale since Monday, February 25, 2019.
This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets".music" and is located in Milwaukee, Wisconsin.
This item can be shipped worldwide.