(1) Tested Sylvania 6CL3 Tube with Box Date Code NR Half Wave Rectifier Tube

(1) Tested Sylvania 6AY3 Tube with Box Date Code mk RAF Half Wave Rectifier

(1) Tested RCA 6CK3 Tube with Box Half Wave Rectifier Tube

(1) Tested GE 35W4 Tube Date Code 61-22 35W4 Half Wave Rectifier

(1) Tested Tung Sol 6AX4GT Tube Date Code 428-3 6AX4 GT Half Wave Rectifier Tube

(1) Tested RCA 6CL3 Tube Date Code 69-09 RCA 6CL3 Half Wave Rectifier

(1) Tested Westinghouse 6CL3 Tube Date Code 83-06 Half Wave Rectifier Tube

(1) Tested RCA 6DE4 Tube with Box Date Code AL RCA 6DE4 Half Wave Rectifier