Vacuum tube 12AX7 National (Matsushita) MT9 pin 2 tubes These have been stored for a long time. They were tested in working equipment and then stored. Heater continuity confirmed. Not a matched pair. 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. No original box. They will be wrapped in bubble wrap and shipped in a plastic case. #Vacuum tube #MT tube #12AX7 Management number V023 V024