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

(1) Tested RCA 6GH8A Tube with Box Date Code DX Medium Triode Cutoff Pentode

(1) Tested RCA 6AZ8 Tube with Box Date Code KG Medium Mu Triode Cutoff Pentode

(1) Tested Tung-Sol 6AW8A Tube Date Code PRI 6AW8 A High Mu Triode Pentode

(1) Tested RCA 6AW8A Tube with Box Date Code BH 6AW8 A Triode Pentode (b)

(1) Tested RCA 6GH8A Tube with Box Date Code EG Medium Triode Cutoff Pentode

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

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