(1) Tested RCA 6BH6 Tube with Box Date Code CJ Sharp Cutoff Pentode Tube

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

(1) Tested RCA 6AG5 Tube Date Code LS RCA Sharp Cutoff Pentode Tube

(1) Tested Strong Sylvania 6BH6 Tube Date Code 013 AMC Sharp Cutoff Pentode Tube

(1) Tested RCA 3DT6A Tube with Box Date Code BM Sharp Cutoff Pentode Tube

(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 RCA 3CE5 Tube with Box Date Code MG Sharp Cutoff Pentode Tube (a)