TYPE Roman Empire, Decentius (351-3 AD), bronze AE2 (centenionalis), 351-3 AD, 4.93g DESCRIPTION . Obv: Bust of Decentius to right; legend: DN DECENT[IVS NOB CAES], Rev: Large Christogram, flanked by 'alpha' and 'omega', legend: SALVS DD NN AVG ET CAES, mintmark "S." in exergue REFERENCE: SR 4033 var. GRADING: AF / F, sporadic pitting, brown patina, very scarce ORDER INFO: R3109, $68 A prized type from a scarce ruler, with the most prominent display, in all of classical coinage, of the famous Christian monogram, with the superimposed Greek letter "chi" and "ro" (HR) - the starting letters of Christ's name. According to legend, Constantine the Great had a vision of Christ prior to the battle of Milvian Bridge, whereby he was instructed to put this sign on his military standards, which so ornamented came to be known as labara. The battle, fought against rival Maxentius on Oct. 28, 312 AD, was a decisive victory for Constantine which opened the door for his uncontested rule, an eventaully led to the triumph of Christianity.