Offered is a lot of (5) 35Z5GT Half Wave Rectifier tubes. (2) are by Ken Rad and (3) are by National Union. One of the National Union tubes has a nice shiny tin base. The tubes each test good on the EICO dynamic tester, they show no shorts or inter-element leakage. All the tubes have a good 6.3 volt lamp tap. Used extensively in old radios in series-string circuits. Pick up these (5) for your own radio work. Production codes are as follows: 709 and O-22 (these two are General Electric made for Ken Rad), and JC, JR(this one has a small crack in the base) and JN. NO RESERVE!! Thanks for looking.