Diocletian (AD 284-305).
Antoninianus
(AE, 23 mm, 3.77 g)
AD 288, Ticinum.

IMP C VAL DIOCLETIANVS AVG Bust of Diocletian right, radiate and cuirassed. / IOVI CONSERVAT Jupiter standing left, holding thunderbolt in right hand and sceptre in left hand; in exergue TXXIT.
RIC 225.
Nice dark patina. Some remains of silvering. Good very fine.