Diocletian BI Antoninianus. (21mm, 3.9 g) Siscia, AD 293-295. IMP C C VAL DIOCLETIANVS P AVG, radiate, draped and cuirassed bust right / CONCORDIA MILITVM, Diocletian standing right, holding parazonium, and receiving Victory from Jupiter standing left, holding sceptre; B between, XXI• in exergue.