Description
2 NU 1625 tubes Factory uniform, NOS NIB NEW USA WW2 vintage August 1944 pro tested strong and nice close matching A beautiful pair of NOS NU 1625t/VT-136 audio output tubes, dated August 1944. Brown base & Black plate construction. BEST of best. Test results: Tube #1 = 4350 micromhos Tube #2 = 4250 micromhos no shorts or leakage photos show each tube being tested Tested on pro calibrated US Military TV7 mutual conductance tube tester. For 1625, scores of 2000 umhos or higher is good. [INV10]