This is a five position SAGE module with 4 large octal vacuum tube installed. There are also 2 logic boards. There are two twenty-four contact parallelogram connectors in the rear. The handle has release levers on each side, an identification tag with number too faded to read, a small red round sticker. In addition, there is a round inspection stamp reading "IBM 282", and a hexagonal innspection stamp reading "K IBM 90". On the side of the handle is a date stamp "MAY 1958".