Pair of RCA National Union NU 813 VT-144 Vacuum Power Tubes USA -Good Continuity Preowned and both tested and working. See all photos for actual condition
Item Tag: 813
NOS NIB US ARMY US NAVY NATIONAL UNION JAN CNU 813 TUBE DATED 1945 VT-144 TUBE
Dated 1945. National Union JAN CNU-813. Original U.S. Army U.S. Navy. Tube in original box. Tested for good continuity. Clear Glass. No discoloration.