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

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

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

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

(1) Tested RCA 6AU6 Tube Code GR Sharp Cut Off Pentode Vintage Tube

(1) Tested RCA 6CB6 Tube Date Code 504 Sharp Cut Off Pentode RCA 6CB6 Tube