CONSTANTIUS GALLUS (Caesar, 351-354). Ae. (21mm, 4.9 g) Siscia. Obv: D N CONSTANTIVS IVN NOB C. Bareheaded, draped and cuirassed bust right. Rev: CONCORDIA MILITVM / III / ESIS (crescent). Emperor standing facing, head left, holding labarum in each hand; star above head.