Pair tube direct heat triode tube British bell tube black base measurement value 54/54 (rejected value 39) There is discoloration on the plate with white box*Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube direct heat triode smoke, made in America, seems to be an OEM product for Canadian Marconi. Measured value 70/68 (rejected value 38) with original box (box is damaged) *Pairs are judged based on values measured with the testing machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube direct heat triode smoke, made in America, seems to be an OEM product for Canadian Marconi. Measured value 66/66 (rejected value 38) with original box (box is damaged) *Pairs are judged based on values measured with the testing machine TV-7 (Kojima Yosuke)
Accessories: original box