Set of 3 5U4GB Rect. Tubes, Mixed Brands, Unboxed, All Tested Good, Balanced

1 RCA 5U4GB Vacuum Tube Vintage Full-Wave Rectifier for Radios & Power Supplies

1960's RCA Seeburg 5U4 GB Vacuum Tube - Tested at 85/92 min 55/55

RCA 5U4GB Vacuum Tube for Radio Model 5U4GB MPN 5U4GB Type Vacuum Tube

RCA 5U4GB Vacuum Tube Made in USA Vintage Nice Condition 1967 for Fender Amp

1 x 5U4gb RCA Tube*Tested Strong* NOS*NIB*#10

RCA 5U4GB/RECTIFIER/BLACK PLATES/1961/HICKOCK TESTED

1957 RCA USN CRC 5U4GB Test NOS 100/100% Black Plates "D" Get Serious Tubes R299