Tacitus AE Antoninianus, 275-276 AD.

Obv: IMP C M CL TACITVS AVG, radiate, draped, cuirassed bust right
Rev: MARTI PACIF - Mars advancing left, holding olive branch, 
spear and shield. 

Exe: Q 
Ticinum mint 

RIC VI 145F; Cohen 60

Courtesy of Beastcoins collection, November 2009