Here is a worn coin that is not in RIC. It is a rare bust type that depicts Crispus holding a horse.
Another example
http://www.notinric.lechstepniewski.info/7lyo-103.htmlCrispus
A.D. 320
20mm 2.1gm
DN IVL-CRISPO N C; bust l., laur., dr., spear on l. arm, holding horse by bridle with r. hand.
VIRTVS EXERCIT; trophy of arms with captive seated on either side, A-S across fields.
in ex. PLG
RIC VII Lyons --