Facing right the emperor wears a laurel wreath which hangs down the back of the neck and over the right shoulder. His hair is finely delineated, as is his noble profile. On the reverse is inscribed VOT XXX (Votis Tricennalibus) within a laurel-wreath. Constantine' s victory at the Milvian bridge (312) against his rival Maxentius established him as sole ruler of the Roman world. As the result of a dream, he sent his soldiers into battle with crosses on their shields. The ensuing victory convinced Constantine the Christian God was on his side, and henceforth established Christianity as the state religion. The floral pattern on this ring reminds us of the laurel wreaths that symbolized the power of the Roman emperor.