This article concerns the first dated vessel of Islamic gilded and enameled glass from an archaeological context: a plate most notable for its long and showy Arabic inscription. Because it was found during excavations at the 13th-century Anatolian Seljuk palace of Kubadabad, the authors call it "the Kubadabad plate." This plate, which is essential for understanding the rise and spread of gilded and enameled glass vessels in the medieval eastern Mediterranean, is examined here in several contexts. The first of these is the archaeological context of the palace, followed by the context of glass production in Islamic Anatolia and Syria. A more complete reading of the inscription is proposed, and the style and content of this inscription, like the plate in general, are related to contemporaneous production in Syria.