(1) Tested RCA 6W4GT Tube Date Code 56-43 RCA 6W4 GT Half Wave Rectifier

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

(1) Tested RCA 6W4GT Tube Date Code KK RCA 6W4 GT Half Wave Rectifier Tube

(1) Tested RCA 6W4GT Tube Date Code 0-48 RCA 6W4 GT Half Wave Rectifier

(1) Tested RCA 6W4GT Tube Date Code 1-52 RCA 6W4 GT Half Wave Rectifier

(1) Tested RCA 6W4GT Tube Date Code 522 RCA 6W4 GT Half Wave Rectifier

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

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