(1) Tested Very Strong GE 6JC8 Tube with Box Date Code CV Triode Pentode Tube

(1) Tested RCA 6JN8 Tube Date Code BW Triode Pentode Vacuum Tube

(1) Tested RCA 6EB8 Tube Date Code AP High Mu Triode Pentode Tube

(1) Tested Philco 6AU8A Tube with Box Date Code 6504 Triode Pentode

(1) Tested RCA 6EH8 Tube with Box Date Code CQ Triode Pentode Vacuum Tube

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

(1) Tested RCA 6GH8A Tube with Box Date Code HE Triode Sharp Cutoff Pentode Tube

(1) Tested RCA 5X8 Tube with Box Date Code KP Triode Pentode Tube