Tacitus AE Ant "CONSERVAT MILIT" Tacitus AD 275-276 AE Antoninianus 

Obv: IMP C M CL TACITVS AVG - Radiate head right, slight
drapery on left shoulder.
Rev: CONSERVAT MILIT- Jupiter, holding scepter, presents globe to Tacitus 
standing on left facing him and holding a scepter. Exe: A | KA Serdica 
mint: AD 275-276 = RIC Vi, 193, page 345 - Cohen 254.02 g.