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

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

(1) Tested RCA 6EW6 Tube and Box Date Code DE RCA Sharp Cutoff Pentode Tube

(1) Tested Magnavox 6EW6 Tube Date Code 235 Japan Sharp Cutoff Pentode Tube

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

(1) Tested GE 6EW6 Tube General Electric Sharp Cutoff Pentode Tube

(1) Tested 1955 Sylvania 6EW6 Tube Date Code 548 Sharp Cutoff Pentode Tube

(1) Tested Sylvania 10GN8 Tube Date Code 1F High Mu Triode Sharp Cutoff Pentode