Description
One (1) 5Z3 Sylvania vintage vacuum tube, ST shape, made in USA, tube has black ribbed plates, clear top, bottom side rectangular getters, printed base, tube tests: 88, 90 % New and shiny in original box. We test all tubes we sell! We will combine shipping! Check out my other tubes! Tested on Triplett tube tester for shorts and leaks as well. Scale 1-100, good quality percentage on my Triplett starts at 54.