For sale is a set of 2 open box National Electronics 7027A Vacuum Tubes made in the USA. Both were tested on a Dyna Jet model 606, both tested at 81 with no grid leakage. Sell all the pictures
Vacuum Tube Philco 5U4GB Rectifier Hanging Filament Vintage Made In USA P4
For sale is a good used Philco 5U4GB Rectifier tube made in the USA. This tested 80% + on a Dyna Jet 606 tester.