Tacitus. Antoninianus. 275-276 AD. Siscia. 

IMP CM CLA TACITVS AVG, radiate, draped, cuirassed bust right
FELICITAS SAECVLI, Felicitas standing left by altar, 
holding patera and caduceus. 

Mintmark V. 

Estiot 2270, La Venera 1755. 
Not in RIC. Rare.

With permission of Roma Numismatics, Mrz, 2010