an elite Mycenaean cemetery; the motif was part of a series of gold jewelry, possibly a necklace with a repeating design. Middle Ages After the Bronze Age collapse, there is a gap of more than two millennia before the re-appearance of the double-headed eagle motif. The earliest occurrence in the context of the Byzantine Empire appears to be on a silk brocade dated to the 10th century, which was, however, likely manufactured in Islamic Spain; similarly early examples, from the 10th or 11th century, are from Bulgaria and from France. Byzantine Empire The early Byzantine Empire continued to use the (single-headed) imperial eagle motif. The double-headed eagle appears only in the medieval period, by about the 10th century in Byzantine art, but as an imperial emblem only much later, during the final century of the Palaiologos dynasty. In Western European sources, it appears as a Byzantine state emblem since at least the 15th century. A modern theory, forwarded by Zapheiriou (1947), connected the introduction of the motif to Byzantine Emperor Isaac I Komnenos (1057–1059), whose family originated in Paphlagonia. Zapheiriou supposed that the Hittite motif of the double-headed bird, associated with the Paphlagonian city of Gangra (where it was known as Haga, ) might have been brought to the Byzantine Empire by the Komnenoi. Adoption in the Muslim world The double-headed eagle motif was adopted in the Seljuk Sultanate of Rûm and the Turkic beyliks of medieval Anatolia in the early 13th century. A royal association of the motif is suggested by its appearance on the keystone of an arch of the citadel built at Konya (Ikonion) under Kayqubad I (r. 1220–1237). The motif appears on Turkomen coins of this era, notably on coins minted under Artuqid ruler Nasir al-Din Mahmud of Hasankeyf (r. 1200–1222). It is also found on some stone reliefs on the towers of Diyarbakır Fortress. Later in the 13th century, the motif was also adopted in Mamluk Egypt; it is notably found on the pierced-globe handwarmer made for Mamluk amir Badr al-Din Baysari (c. 1270), and in a stone relief on the walls of the Cairo Citadel. Adoption in Christian Europe Adoption of the double-headed eagle in Serbia, Russia and in the Holy Roman Empire begins still in the medieval period, possibly as early as the 12th century, but widespread use begins after the fall of Constantinople, in the late 15th century. The oldest preserved depiction