(1) Tested Very Strong RCA 6GY6 Tube Date Code CT 6GY6 Sharp Cutoff Pentode Tube

(1) Tested RCA 6GY6 Tube Date Code 65-48 6GY6 Sharp Cutoff Pentode Tube

(1) Tested RCA 6BH6 Tube with Box Date Code CJ Sharp Cutoff Pentode Tube

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

(1) Tested RCA 6BJ6 Tube with Box Date Code 243 Remote Cutoff Pentode Tube

(1) Tested RCA 6EW6 Tube with Box Date Code CED RCA Sharp Cutoff Pentode Tube

(1) Tested RCA 6AG5 Tube with Box Date Code KH RCA Sharp Cutoff Pentode Tube

(1) Tested RCA 3DT6A Tube with Box Date Code BM Sharp Cutoff Pentode Tube