Constantine I (307-337). AE Follis, Siscia mint. Obv. CONSTANTINVS MAX AVG. Diademed, draped and cuirassed bust right. Rev. GLORIA EXERCITVS. Two soldiers standing facing, holding spear and shield; between them, two standards. RIC 219. AE. g. 2.74 mm. 18.00 Reddish-brown tone. EF. Provenance: