6AN4 Sylvania Triode Vacuum Tube - NOS - TESTED

6CM7, Sylvania, Dual Power Triode Vacuum Tube - NOS - TESTED

6DR7 NOS/NIB Sylvania Black Plate Dual Triode Tube-Knight-Tested-Free Ship US

NOS/NIB RCA 6SN7GTB Dual Triode Vacuum Tube - Tested

6CN7 Sylvania Twin Diode Twin Triode Vacuum Tube - NOS - TESTED

6AF4A Sylvania UHF Oscillator Triode Vacuum Tube - NOS - TESTED

Sylvania 6DR7 Double Triode Tube NOS Quantity TESTED

13DR7 Sylvania Double Triode Vacuum Tube - NOS - TESTED