Crispus AE3. Struck 318 AD. 

Obv: CRISPVS NOB CAES, laureate draped & cuirassed bust right 
Rev: PRINCIPI IVVENTVTIS, Mars standing left, nude except for helmet, chlamis 
 and boots, left hand on sheild on ground, spear in right, 
 Q(star-in-crescent)A in exergue.

Rated R4 by RIC.

Contributed by Andrew Thall, May, 2003.