It is not, as is popularly supposed, enclosed in Gian Lorenzo Bernini's bronze chair, but is kept under triple lock and exhibited only once in a century. Byzantium, like Greece and Rome, affected the curule form of chair, and in addition to lions’ heads and winged figures of Victory (or Nike) and dolphin-shaped arms used also the lyre-back which has been made familiar by the pseudo-classical revival of the end of the 18th century. One type of chair in ancient Mexico is called the icpalli and is mentioned by Jacques Soustelle. The icpalli can be seen in Diego Rivera's mural of the Aztec market of Tlatelolco, Palacio Nacional, Mexico City. The icpalli is also featured in the Codex Telleriano-Remensis; dignitaries and emperors are depicted sitting in them. The chair of Maximian in the cathedral of Ravenna is believed to date from the middle of the 6th century. It is of marble, round, with a high back, and is carved in high relief with figures of saints and scenes from the Gospels—the Annunciation, the Adoration of the Magi, the flight into Egypt and the baptism of Christ. The smaller spaces are filled with carvings of animals, birds, flowers and foliated ornament. The Chair of St. Augustine, dating from at least the early thirteenth century is one of the oldest cathedrae is not in use. Another very ancient seat is the so-called "Chair of Dagobert" in the Louvre. It is of cast bronze, sharpened with the chisel and partially gilt; it is of the curule or faldstool type and supported upon legs terminating in the heads and feet of animals. The seat, which was probably of leather, has disappeared. Its attribution depends entirely upon the statement of Suger, abbot of St Denis in the 12th century, who added a back and arms. Its age has been much discussed, but Viollet-le-Duc dated it to early Merovingian times, and it may in any case be taken as the oldest faldstool in existence. To the same generic type belongs the famous abbots’ chair of Glastonbury; such chairs might readily be taken to pieces when their owners travelled. The faldisterium in time acquired arms and a back, while retaining its folding shape. The most famous, as well as the most, ancient, English chair is that made at the end of the 13th century for Edward I, in which most subsequent monarchs have been crowned.