The image is a photograph of a piece of paper with text written in Greek. The text is written in black ink on a white background and is divided into two columns. The first column is titled "The Antikythera Mechanism" and the second column is labeled "Seven large fragments (A-6) and 75 minor pieces (1-75), made of bronze, have survived. It is not certain that the 75 small fragments belong to the Mechanism. The Greek inscriptions on the surface of many fragments refer to astronomical and calendar calculations as well as to instructions for its use. It was contained in a wooden-framed case, probably with a bronze plaque on its front and back. It dates to 150-100 BC.