LOT OF 3 INTERNATIONAL C 6X8A TRIODE/PENTODE AMPLIFIER VACUUM TUBE BOXES TESTED

TELEFUNKEN 12BA6 PENTODE AMPLIFIER VACUUM TUBE RF,IF RADIO USE TESTED

6BD6 CBS Remote-Cutoff Pentode Vacuum Tube NOS - TESTED

CBS 6K6GT Vacuum Tube Power Pentode Tested 100 NOS Strength

3BA6 NOS vacuum tube Marconi pentode

6BD6 Raytheon Remote-Cutoff Pentode Vacuum Tube - NOS - TESTED

One Excellent CBS 3V4 Tube NOS Pentode Test[%]: 110 TV-7

6BC5 CBS Sharp-Cutoff Pentode Amplifier Vacuum Tube NOS - TESTED