The crown was used in the coronation of the King of the Romans, the title assumed by the Emperor-elect immediately after his election. It was made in the late 10th or early 11th century. The crown has an octagonal rather than a circular shape, and is constructed from eight hinged plates. The plate in the front of the crown is surmounted by a cross, with a single arch linking it to a plate at the rear of the crown.
The crown was made probably somewhere in Western Germany, either under Otto I under Conrad I, or under Conrad III during the late 10th and early 11th centuries. The first preserved mention of it is from the 12th century. Most of the Kings of the Romans of the Holy Roman Empire were crowned with it. The crown is kept in the Imperial Treasury at the Hofburg in Vienna, Austria.