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

(1) Tested RCA 6BR8A Tube with Box Date Code CB RCA Triode Pentode Tube

(1) Tested Strong RCA 6EH5 Tube with Box Date Code ED Pentode Tube

(1) Tested Strong RCA 6JH6 Tube with Box Date Code CA RCA Pentode Tube

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

(1) Tested RCA 6AU8 Tube with Box Date Code KQ Triode Pentode Tube

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

(1) Tested RCA 6BH8 Tube with Box Date Code BZ 6BH8 Triode Pentode Tube