Quarter Follis Emperor Constantius I (as Augustus)Rv GENIO POPVLI ROMANI 1.91 grams 18mm Siscia AD 305-6 Obv. CONSTANTIVS AVGLaureate bare bust of Emperor Constantius I right Rv. GENIO POPVLI ROMANIGenius standing left holding cornucopia and pateramint mark SIS in exergue RIC 167Sear 14192