(1) Tested RCA 6CW4 Tube Nuvistor Tube with Box Date Code 039 High Mu Triode

Vacuum Tube Lot RCA GE Sylvania Philco 5U4GB 6SN7WGT 6BG6 84 6Z4 22KM6 OD3

(1) Tested Philco 6AF4 Tube Date Code 57-52 Medium Mu Triode Tube Sylvania EIA

(1) Tested Sylvania 3GK5 Tube with Box Date Code gb AKP High Mu Triode Tube

(1) Tested Sylvania 6FH5 with Box Date Code AAD Triode Vacuum tube

(1) Tested Sylvania 6T8A Tube Date Code ab ESO Triple Diode High Mu Triode Tube

(1) Tested Sylvania 12AV6 Tube Date Code bh AUN 12AV6 Twin Diode High Mu Triode

(1) Tested RCA 6AT6 Tube with Box Date Code BF Twin Diode High Mu Triode Tube