Maximianus AE Antoninianus. Siscia mint, 291 AD. 

IMP C M A VAL MAXIMIANVS PF AVG, radiate head right.
VICTORIA AVGG, Emperors standing face to face, Victory standing
left between them, her hands on their shoulders.
Mintmark XXI dot A.

RIC 588; Cohen 546.

Contributed by T&S Petrov Art Numis, August 2012.