Tacitus (AD 275-276).
Antoninianus
(AE, 22 mm, 4.12 g)
AD 276, Lugdunum.

IMP CL TACITVS AVG Bust of Tacitus right, radiate, cuirassed and draped. / MARS VICTOR Mars walking right, holding transverse spear pointing forward in right hand and trophy over left shoulder in left hand; in left field C; in right field star.
RIC online 3335.
Nice dark toning with traces of silvering. Good very fine.