Diocletian. AD 284-305. AR Argenteus (19mm, 2.95 g, 6h). Siscia mint. Struck circa AD 294-295. Laureate head right / Four tetrarchs sacrificing over tripod before city enclosure with eight turrets. RIC VI 43a; Jeločnik 3a; RSC 516†m. Near VF, patchy tone, porous surfaces.