8BA11 NOS vacuum tube Zenith

Sylvania 6BA11 Vacuum Tube TESTED 90-98% on both sections on B&K 700 Tester

GE 17JZ8 Electronic Vacuum Tube TESTED @ 90-95% on both sections on B&K 700

Zenith 17AX3 Radionic Vacuum Tube NOS TESTED @ 92% on B&K 700 tester Made in USA

GE Vacuum Tube 6Z10/6J10 TESTED Both sections 1st @ 93% and 2nd @ 85% on B&K 700

Zenith - 8BA11 - Radionic Vacuum/Radio Tube - Old Stock - L06R

Zenith Vacuum Tube 8BA11

Zenith Radionic Vacuum Tube 15MF8 TESTED @ 99/100 on B&K700 tester NOS USA