1 NOS NIB Sylvania 5692 Brown Base Tube USA 1957

1 Raytheon 5692 Black Plate Vacuum Tube Tested NOS On Calibrated TV - 7

Matched Pair RCA 5692 Triple Mica Black Plate Support Rods USA

5692 Sylvania Brown Base 3 Mica Tube New (New Old Stock) TestNEW 1 Year Warranty

Vintage RCA 6973 USA Vacuum Valve Tube NOS

National No. 5692 vacuum tube NOS - made in U.S.S.R

RCA 5692 New In Original Box Vacuum Tube With Black Base (L#2)

2 lot of VACUUM TUBES. RCA #7025. TESTED & WORK. NON-ORIGINAL BOXES-USA