(1) Tested RCA 6AW8 Tube with Box Date Code BKP 6AW8 High Mu Triode Pentode

(1) Tested Very Strong RCA 6GN8 Tube with Box Date Code DL High Mu Triode Tube

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

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

(1) Tested RCA 5CG8 Tube with Box Date Code KR Triode Pentode Tube

(1) Tested RCA 6JV8 Tube and Box Date Code BZ Triode Pentode Tube (b)

(1) Tested RCA 6AW8A Tube and Box Date Code BH 6AW8 A High Mu Triode Pentode (a)

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