(1) Tested Strong RCA 19AU4GTA Tube Date Code LZ 19AU4 GTA Half Wave Rectifier

(1) Tested Strong Motorola 19AU4 Tube Date Code 57-17 Half Wave Rectifier Tube

(1) Tested GE 6AX3 Compactron Tube with Box Date Code JF Half Wave Rectifier

(1) Tested Sylvania 35W4 Tube Date Code la BDL 35W4 Half Wave Rectifier

(1) Tested RCA 6DE4 Tube Date Code BV 6DE4 Half Wave Rectifier Vacuum Tube

(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 RCA 6DE4 Tube Coin Base Date Code CV Half Wave Rectifier Tube