(1) Tested RCA 3CE5 Tube with Box Date Code MG Sharp Cutoff Pentode Tube (b)

(1) Tested RCA 3CE5 Tube with Box Date Code MI Sharp Cutoff Pentode Tube (a)

(1) Tested RCA 3CE5 Tube with Box Date Code MI Sharp Cutoff Pentode Tube (b)

(1) Tested Very Strong RCA 6GY6 Tube Date Code CT 6GY6 Sharp Cutoff Pentode Tube

(1) Tested Sylvania 6BH6 Tube with Box Date Code jm ARH Sharp Cutoff Pentode

(1) Tested RCA 12AW6 Tube with Box Date Code 822 Sharp Cutoff Pentode Tube

(1) Tested RCA 12BD6 Tube with Box Date Code LV RCA 12BD6 Remote Cutoff Pentode

(1) Tested RCA 3BC5 3CE5 Tube with Box Date Code BN Sharp Cutoff Pentode Tube