Byzantine bronze follis from the reign of Justinian I, who ruled from 527 to 565. In Justinian's hand is a cross on a globe (globus cruciger), which came to be interpreted as showing the triumph of Christianity over the empire, an image that first appears on Roman coinage with Theodosius I (346-395). On the reverse, the M indicates the value of the coin (40 nummi), the letter B indicates the workshop, the letters KYZ indicate the Cyzicus mint, the word ANNO is on the left and on the right is the lettering for the regnal year 15 (536-7). Justinian the Great, restored the empire to some of its former glory. Among his accomplishments were recovery of much lost territory, reform of Roman law (the Justinian code), promoting one faith in the empire, and building projects such as the Hagía Sophía. The coin is 37 mm and weighs 17.28 grams.