Probus, AE antoninianus, Ticinum. 21-23 mm, AD 279. 

VIRTVS PROBI AVG, radiate and cuirassed bust left, 
holding spear and shield.
MARTI PACIF, Mars walking left, holding branch, spear and shield.
Mintmark Delta XXI. 

RIC V-2 Ticinum 543. 

Contributed by Martin Griffiths, June 2009.