Crispus, AE follis, Constantinople mint. AD 326-327. 

CRISPVS NOB CAES, laureate, draped and cuirassed bust right 
PROVIDEN-TIAE CAESS, campgate, seven layers on a base, two 
turrets, star above. 
B in left field. 
Mintmark CONS.

RIC VII Constantinople 8; Sear 16805.
Very rare (rated R4)

Contributed by Andreas ABL, Oct. 2015.