RCA 6GM6 Vacuum Tube Tested Good

6AU8A 6BH8 Amperex Vacuum Tube NOS NIB Tested Strong (Last Nine)

One Excellent AMPEREX 6GH8A Tube NOS NIB Triode/Pentode GM[%]: 96/100 AMPLITREX

Amperex 6GH8A Vacuum Tube NIB/NOS Tested

NOS NIB Amperex Bugle Boy ECF80 / 6BL8 Audio Vacuum Tube - Tested - Holland

PAIR NOS/NIB 5DJ4 RECTIFIER VACUUM TUBE - AMPEREX & GE - TESTED

6AU8A 6BH8 Amperex Vacuum Tube NOS NIB Tested Strong (Last Nine)

Amperex 6JH6 Vacuum Tube NIB/NOS Tested