The symbols cover both sides of the disc. They show everyday things. They were stamped onto the disc, pressed into the clay when it was still soft. They run in a spiral. This disc is the first known "printed" work in history; in the sense that there was a re-usable set of characters and drawings. It is the only artefact of its kind. Many questions have been asked about the disc, about its purpose, and if the signs shown actually represent writing.