Ticinum mint. Dot in right field. Reference: RIC VI Ticinum 31b. Maximian, Latin in full Marcus Aurelius Valerius Maximianus, (born c. AD 250, Sirmium, Pannonia Inferior—died A.D. 310, Massilia [now Marseille, France]), Roman emperor with Diocletian from AD 286 to 305.
eBay