(1) Tested Strong Sylvania 6DW4B Tube Date Code KUA Half Wave Rectifier

(1) Tested Strong Raytheon 6DW4B Tube Date Code W04 Half Wave Rectifier

(1) Tested Strong RCA 6DW4B Tube Date Code B4 Half Wave Rectifier

(1) Tested Very Strong RCA 1J3 Tube Date Code MP Half Wave Rectifier Tube

(1) Tested Strong RCA 17D4 Tube Code NG Half Wave Rectifier Tube

(1) Tested Very Strong RCA 6AF3 Tube with Box Date Code ND Half Wave Rectifier

(1) Tested RCA 6CQ4 Tube Date Code CW Vintage RCA Half Wave Rectifier Tube

(1) Tested RCA 6W4GT Tube Date Code 3-43 RCA 6W4 GT Half Wave Rectifier