(1) Tested Raytheon 12EL6 Tube with Box Code IO4 Dual Diode High Mu Triode (c)

(1) Tested Raytheon 12EL6 Tube with Box Dual Diode High Mu Triode Tube (b)

Globe 245 Triode Tube Powertone Everyready Raytheon Box Plate

(1) Tested Raytheon 6J6 Tube with Box Date Code 626 Medium Mu Twin Triode Tube

(1) Tested Sylvania 3AV6 Tube with Box Date Code ACG Twin Diode High Mu Triode

(1) Tested Raytheon 7X7 Tube Code 752 Loktal Tube Loctal Tube Diode Triode Tube

(1) Tested RCA 5T8 Tube with Box Code KP Triple Diode High Mu Triode Tube

(1) Tested Philco 6AT6 Tube Date Code 50-13 Dual Diode High Mu Triode Tube