Tacitus Antoninianus. 275-276 AD. 

Obv: IMP CM CL TACITVS PF AVG, radiate, draped & cuirassed bust right
Rev: TEMPORVM FELICITAS, Felicitas standing left, holding caduceus & cornucopiae; A in left field, star in right field. Lyons mint. 

RIC V-1 63, Bastien 92

Contributed by Dane for Roma Numismatics