This is a generic module rack with 10 modules installed.Each with two vacuum tubes. There are tags on each of the modules, numbering them E13-3-1 through 10. There is also a larder tag reading, "OK A.C.A 14-1-58." There are 22 coaxial connectors. There are also numbers on each of the cooaxial connector spaces, which read J1-1 through J10-4. At one end there are two terminal strips on the top, two at the bottom, and one on the side of the chassis. On the bottom of the chassis there is an "F" written in black grease pencil.