Crispus (317-326). AE Follis, Siscia mint, 317 AD. Obv. CRISPVS NOB CAESAR. Laureate, draped and cuirassed bust right. Rev. PRINCIPIA - IVVENTVTIS. Crispus, draped, cuirassed, cloak spread, standing right, holding reversed spear in right hand and resting left hand on shield. RIC VII Siscia 39. 2.97 g. 20.5 mm. Nice bluish-green patina. VF/About VF.