Dumont by Sylvania 807 Vacuum Tube NOS/NIB Tested

6BX7GT NOS Sylvania amplifier electron radio audio vacuum tube tested 6BX7

JHS 6AU6WB Sylvania NOS Vacuum Tube - Premium Gold Label - 1960 - Tested

Sylvania 6DN7 Electronic Vacuum Tube - NOS - Tested

12DQ6B 12GW6 Sylvania Beam Power Pentode Vacuum Tube - NOS - TESTED

807 VACUUM TUBE (set of 2) Sylvania NOS

GENERAL ELECTRIC/SYLVANIA GL-807 ELECTRON TUBE (TESTED W/ TV-7D/U)