This Crispus has a horseman engraved on the shield. In RIC, another example is mentioned in the footnotes. It just sold for $202.99.
Crispus
A.D. 320
18mm 2.8gm
IVL CRISPVS NOB CAES; Laureate, cuirassed, spear pointing forward, shield engraved with horseman on left arm.
VIRTVS EXERCIT; Standard inscribed VOT/X with captive seated on ground on either side, in left field S, in right field F over HL
in ex. ΓSIS ✶
RIC VII Siscia 123
