Lot Of 7 Tv-7 Tested Good Tung-sol 5z3 Radio Vacuum Tubes Type 5z3 Zenith Nu +
All Tubes are double tested on my 2 calibrated TV-7B/U tube testers. The recommended minimum value for these types of tubes is 40/40(60%). They tested at: TUNG-SOL 48/49, TUNG-SOL 46/45, RAYTHEON 83/92, NU 58/58, CROSLEY 62/56, ZENITH 52/40 & KEN-RAD 45/45, with no shorts. The test results are written on all tubes.