Pair tube Russian reprint model lot: 1609/1610 measured value 56/54 (rejected value 44) with original box*Pairs are judged based on gM values measured by testing machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube 6BQ5 compatible ball pentode tube made in Russia, black plate, measured value 78/72 (rejection value 50) with original box ※ pair is determined based on GM values measured with test machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube 6SN7 compatible ball smoke made in England lot: 1185 MXA/1185 MXA measured value 64/64 (rejected value 50) with white box*Pairs are judged based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: white box