Crispus AE Alexandria, London. AD 316-317. 

FL IVL CRISPVS NOB CAES, laureate head right.
IOVI CONSER-VATORI CAESS, Jupiter standing left, chlamys across left 
shoulder, holding Victory on globe and sceptre, eagle with wreath 
at foot left.

K in left field, wreath over X over A in right field.
Mintmark ALE.

RIC VII Alexandria 20.
Very rare, rated R5.

Contributed by Richard Demarco of Carpe Diem Numismatics.