6CR6 Raytheon Sharp-Cutoff Pentode Vacuum Tube - NOS - TESTED

6CR6 CBS Hytron NOS NIB vacuum tube vintage

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

CBS 6K6GT Vacuum Tube Power Pentode Tested 100 NOS Strength

JHY 6AG5WA CBS-Hytron Sharp Cut-off RF Pentode Tube NOS Tested QTY

6SQ7 NOS CBS Hytron AA5 amplifier radio audio metal vacuum tube tested 6SQ7GT

6K6GT CBS Hytron USA Dark Glass Vacuum Tube Hickok Tested NOS 🎧

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