(1) Tested Tung Sol 6CY7 Tube with Box Date Code PW-E Dual Triode Tube

(1) Tested GE 6JV8 Tube and Box Date Code NJ General Electric Triode Pentode (b)

(1) Tested GE 6ES5 Tube with Box Date Code JE General Electric Triode Tube

(1) Tested GE 5X8 Tube with Box Date Code FV General Electric Triode Pentode

(1) Tested GE 6GU7 Tube Date Code 85-33 General Electric 6GU7 Twin Triode Tube

(1) Tested GE 6JV8 Tube and Box Date Code NJ General Electric Triode Pentode (a)

(1) Tested GE 12AT6 Tube with Box Code DE General Electric Twin Diode Triode

(1) Tested GE 5GH8 Tube with Box Date Code JC General Electric Triode Pentode