Roman Empire. Probus, 276-282 AD. AE Antoninianus. Siscia Mint, Struck 277 AD.
 
Obv: IMP C M AVR PROBVS P AVG, radiate, mantled bust left holding sceptre. Rev: VIRTVS PROBI AVG, Mars walking right holding trophy and spear, S to right.
 
With an old collection ticket.