Probus, AE antoninianus, Rome. 24mm, 5.31 g. Ticinum. 

IMP C PROBVS P F AVG, Radiate, cuirassed bust left.
CONSERVAT AVG, Sol standing front, head left, holding globe and raising right hand. 
Mintmark TXXT.
 
RIC V-2 Ticinum 349.

With permission of auctiones.ch, eAuction #42, Lot 91. 
Estimate: CHF 50.00