Vacuum tube 12AX7 〇T (T mark) National (Matsushita) MT9 pin 1 piece This item has been stored for a long time. It was stored after being tested in a working device. The heater continuity was re-confirmed for this listing. There is dirt on the exterior. The dirt can be wiped off, but in the case of old vacuum tubes, the printing easily disappears, so I haven't wiped it off. There is no original box. It will be wrapped in bubble wrap and shipped in a plastic case. #Vacuum tube #MT tube #12AX7 #〇T #T mark Management number V025