Probus, AE antoninianus, AD 276-282, Rome. 

PROBVS PF AVG, radiate, cuirassed bust right.
MARTI PACIF, Mars walking left, holding branch,
spear and shield.

Mintmark RQ gamma.

RIC V-2 Rome 177.

Part of the AEQVITI series of Rome (Q)

Contributed by Martin Griffiths, March, 2004.