Probus, AE antoninianus. Ticinum. 

VIRTVS PROBI AVG, Radiate, cuirassed bust right, holding spear and shield
FIDES MILITVM, Fides standing left, holding two standards.
Mintmark III.
RIC V-2 Lyons 78 var (bust type and obv legend).

Rare, not in RIC, Alföldi, Cohen etc.

Contributed by Miroslav Jovanovic, Jan, 2012.