NOS Sylvania 17AX4GTA Vacuum Tube - White Box - Tested

12AV5GA NOS Sylvania vintage radio audio amplifier vacuum tubes 2 valve tested

VINTAGE NOS SYLVANIA 5BQ7A VACUUM TUBE TUBES LOT OF 2 USA TESTED TUB14061

Sylvania 6BC5 Electronic (Vacuum) Tube (NOS) Original Box (2 in package)

2 NOS Vintage 6AK5 Hytron & Sylvania Miniature Type Pentode Vacuum Tube "TESTED"

Sylvania 12AL5 Vacuum Tube Hickok Tested 100%+ #2 NOS

SYLVANIA 2EA5 Vacuum Tube Nos TESTED

(2) Sylvania/Realistic 5GH8 NOS Vacuum Tubes Tested