Bronze AE3, 20mm, 2.85gm, issued AD 326/327 Cyzicus mint.
Obv: FL IVL CRISPVS NOB CAES, Bust of Crispus, laureate, draped, cuirassed, left.
Rev: PROVIDENTIAE CAESS (•SMKΓ• in ex.), Camp gate with two turrets, without doors; star above.
References: Sear 16810, RIC 45.