Four 6AU6A tubes. The manufacturer is Toshiba, and they are in unopened original boxes. (Both the top and bottom outer flaps have a pair of inner flaps glued in place, preventing the vacuum tubes from being removed.) I have tested one tube by opening it and confirming its operation in a radio. The opened tube is the one in the upper left of photo 1, which has a small peeling on the top. Also, I have included a photo (photo 3) showing how the box was glued. I will ship via Nekopos. # 6AU6-A