Crispus. Caesar. 316-326. Follis (19mm, 3.2 g). Rome. Struck 317. CRISPVS NOBIL CAES, bust of Crispus, laureate, cuirassed, right. Rev. PRINCIPIA IVVENTVTIS, Crispus, helmeted, draped, cuirassed, cloak spread, standing right, holding reversed spear in right hand and placing left hand on shield; A/RQ.