Three 15DQ8 tubes. All three are made by Matsushita. One is new, unopened, with the original box; the other two are without boxes. There are several articles online about building amplifiers using this tube type. For those who are interested. I do not own any equipment that uses these vacuum tubes at the time of listing, so I have not been able to confirm their operation in a device at the time of listing, but I have confirmed the heater continuity of the two tubes without boxes. Will ship via Nekopos. # 15D-Q8