The Roman, Byzantine, crusader and other coins below carry the symbols of Christ. In 312 A.D., Constantine dreamed he saw a Chi RhoChristogram in the sky and heard the words IN HOC SIGNO ERIS, meaning "In this sign you will be the victor." He ordered the sign of Christ on his legions' standards and shields. He won a great victory and later became the first Christian Roman Emperor. Click here to read Christian Themes in Byzantine Coinage by Zach Margulies.