Crispus. Caesar, A.D. 317-326. AE follis (19.4 mm, 2.89 g, 6 h). Cyzicus mint, struck A.D. 324-325. FL IVL CRISPVS NOB CAES, laureate, draped and cuirassed bust of Crispus left / PROVIDENTIAE CAESS, camp gate with a star and two turrets above; SMKB in exergue. RIC 25; LRBC 1161. aVF, granular surfaces.