(1) Tested GE 2CY5 Tube Date Code JT General Electric Sharp Cutoff Tetrode Tube

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

(1) Tested RCA 6CY5 Tube with Box Date Code DC Screen Grid Tetrode Tube

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

(1) Tested GE 12AV5GA Tube Date Code57-43 General Electric 12AV5 GA Tube

(1) Tested GE 6GY6 Tube Date Code 5-48 General Electric 6GY6 Pentode Tube

(1) Tested GE 117Z3 Tube Date Code 2-17 General Electric Half Wave Rectifier

(1) Tested Motorola 7167 Tube Date Code AAX Sharp Cutoff Tetrode Tube