(1) Tested Strong RCA 2CY5 Tube with Box Date Code EG Sharp Cutoff Tetrode Tube

(1) Tested RCA 2CY5 Tube with Box Date Code EW Sharp Cutoff Tetrode Tube

(1) Tested Strong RCA 2CY5 Tube with Box Date Code EA Sharp Cutoff Tetrode Tube

(1) Tested Very Strong RCA 2CY5 Tube with Box Sharp Cutoff Tetrode Tube

(1) Tested RCA 6CY5 Tube with Box Date Code BF Sharp Cutoff Tetrode Tube

(1) Tested GE 2CY5 Tube with Box Code MJ General Electric Sharp Cutoff Tetrode

(1) Tested Very Strong RCA 2CY5 Tube Date Code CS Sharp Cutoff Tetrode Tube

(1) Tested Channel Master 2CY5 Tube with Box Code F40 Sharp Cutoff Tetrode Tube