Tacitus, AV Aureus, Siscia. 275-276 AD.

Obv: IMP C M C L TACITVS AVG, radiate, cuirassed bust right.
Rev: VIRTVS MILITVM, Tacitus on horseback right, holding spear. 

RIC 179v (bust type), Estiot 111

Courtesy of Numismatica Ars Classica, Nov. 2009