Crispus, AE Follis. 320 AD. Trier. 

CRISPVS-NOB CAES, helmeted, cuirassed bust right
VIRTVS-EXERCIT, standard inscribed VOT XX with captive seated on either side, STR in ex. 

RIC VII Trier 270, rated R2.

With permission of Roma Numismatics, June 2009