(1) Tested RCA 12SJ7 Tube with Box Date Code MC RCA Sharp Pentode Tube

(1) Tested RCA 12SJ7 Tube Date Code 9-43 RCA Sharp Pentode Tube

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

(1) Tested Strong RCA 6GY6 Tube with Box Date Code DD Sharp Cutoff Pentode Tube

(1) Tested RCA 3AU6 Tube Date Code ET with Original Box Pentode Tube

(1) Tested RCA 6JE8 Tube with Box Code AV High Mu Triode Sharp Cutoff Pentode

(1) Tested RCA 6EW6 Tube with Box Date Code CED RCA Sharp Cutoff Pentode Tube

(1) Tested RCA 5AN8 Tube with Box Date Code KQ Triode Pentode Tube