(1) Tested Strong CBS 6W4GT Tube CBS 6W4 GT Half Wave Rectifier Tube

Vintage Tested Good Zenith 6W4GT Half Wave Rectifier Vacuum Tube

Vintage Tested Good GE 6W4GT Half Wave Rectifier Vacuum Tube

(1) Tested Tung-Sol 6W4GT Tube Date Code 528-3 6W4 GT Half Wave Rectifier

Vintage Tested Good Tung-Sol 6W4GT Half Wave Rectifier Vacuum Tube

Vintage Tested Good Tele-Tone 6W4GT Half Wave Rectifier Vacuum Tube

(1) Tested RCA 6W4GT Tube with Box Date Code KG 6W4 GT Half Wave Rectifier Tube

(1) Tested RCA 6W4GT Tube Date Code 0-43 RCA 6W4 GT Half Wave Rectifier