(1) Tested RCA 3AU6 Tube with Box Date Code FB Sharp Cutoff Pentode (b)

(1) Tested RCA 3CE5 Tube with Box Date Code MG Sharp Cutoff Pentode Tube (b)

(1) Tested RCA 6HS8 Tube with Box Date Code AR Sharp Cutoff Twin Pentode Tube

(1) Tested RCA 12AW6 Tube with Box Date Code 822 Sharp Cutoff Pentode Tube

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

(1) Tested RCA 12BD6 Tube with Box Date Code LV RCA 12BD6 Remote Cutoff Pentode

(1) Tested RCA 12AU6 Tube with Box Date Code 443 Sharp Cutoff Pentode Tube

(1) Tested RCA 6CB6 Tube with Box Sharp Cut Off Pentode Tube TV-10 Tested (a)