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

(1) Tested Magnavox 6EW6 Tube Date Code 3-26 Sharp Cutoff Pentode Tube

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

(1) Tested Sylvania 3CF6 Tube Date Code RAA Sharp Cutoff Pentode Tube

(1) Tested Silvertone 6GY6 Tube Made in Japan Sharp Cutoff Pentode Tube

(1) Tested Motorola 6EW6 Tube Date Code 60-26 Sharp Cutoff Pentode Tube

(1) Tested Strong Admiral 6DT6 Tube Date Code 57-26 Sharp Cutoff Pentode Tube

(1) Tested GE 6EW6 Tube Date Code 64-26 Sharp Cutoff Pentode Tube