(1) Tested RCA 6H6 Tube Date Code 317 RCA 6H6 Twin Diode Black Metal Tube

(1) Tested Balanced RCA 6H6 Tube Date Code 448 RCA 6H6 Twin Diode Metal Tube

(1) Tested Strong Ken-Rad 12AT6 Tube Date Code 6-30 Twin Diode High Mu Triode

KEN-RAD 6H6 ~~ Twin Diode Vacuum Tube ~~ Used, Tested

(1) Tested Rad-Tel 6T8A Tube Date Code 2-66 Rad Tel 6T8 A Triple Diode Triode

New Unused Ken Rad JAN CKR 6H6 Dual Diode / Old Vintage Ham Radio Tube Receiver

(1) Tested Ken Rad JKR 9006 Tube Date Code Z4 Mil Spec Single Diode Tube

(1) Tested Ken-Rad Type 85 Tube Date Code 648 Ken Rad 85 Tube Diode Triode Tube