5881 6L6WGB TUNG-SOL 2 PIECES USED TUBE VALVE TEST 80 % PLUS
USA made by Tung Sol. Our usual tube tester is the AVO VCM163. One of the best testers in the world. Tested working, emission is 80% or greater, but are not a matched pair. 5881/6L6WGB Tung-Sol USA used similar appearance.