3x Matsushita amperex 6CA7 EL34 Black Base ring Getters tested strong At-1000

VT-4-C GL-211 GE Audio/RF Power Triode Vintage Vacuum Tube w/ original paperwork

(3) CV1075 KB/Z Tubes, Military Grade KT66, Made in Great Britain, test good

17 New In The Box Usa Made 12AT7 tubes #813

Philco 6sn7gtb Audio Tube Black Plate Chrome Dome

Sylvania VT-25-A VT25A VT25 Power Amplifier tube. Tests 115% gm on AT1000

Globe 245 Triode Tube Powertone Everyready Raytheon Box Plate

Matched Pair Tung-Sol 7236 Mil Spec 6080/6AS7G 3X Micas Matched Codes Amplitrex