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

(1) Tested Sylvania 12JN8 Tube with Box Date Code YAA Triode Pentode Tube (a)

(1) Tested RCA 6BA8A Tube Date Code NR Medium Mu Triode Cutoff Pentode 6BA8 A

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

(1) Tested Sylvania 6KE8 Tube with Box Date Code bd DHB Triode Pentode Tube

(1) Tested RCA 6CX8 Tube with Box Date Code NF Medium Mu Triode Pentode Tube

VINTAGE SLEEVE OF 5 NOS RCA 6LF8 TRIODE PENTODE TUBES AMPLIFIER

(1) Tested Sylvania 6JV8 Tube with Box Date Code NR AAA Triode Pentode Tube