Crispus. AE Follis, Trier. 320 AD. 

CRISPVS-NOB CAES, helmeted, cuirassed bust right.
VIRTVS-EXERCIT, Standard inscribed VOT / XX in two lines standing 
on ground, captive seated on either side. 

Mintmark PTR. 

RIC VII Trier 270 var (officina). Poss. R4. 

(One other is in Mark Wilson's collection)

With permission of Roma Numismatics, Jul, 2010