Divus Constantius I. Died A.D. 306. AE half follis (16.3 mm, 1.39 g, 12 h). Siscia mint, struck A.D. 317-318. DIVO CONSTANTIO PIO PRINCIPI, laureate and veiled head right / REQVIES OPTOMORVM MERITORVM, Constantius seated left on curule chair, holding scepter and raising right hand, SIS in exergue. RIC 42. VF.