The pair tube is thought to be made by GE due to its American structure. The measured value is 60/54 (rejected value 44) is written on the base with the original box, and there are fewer side getters per unit ※The pair is judged based on the gM value measured by the test machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube direct heat triode tube American-made smoke measurement value 68/68 (rejection value 38) with white box (lid claws are missing) *Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube direct heat triode tube American-made smoke measurement value 72/70 (rejection value 38) with white box (lid claws are missing) *Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: white box