Tacitus, AE antoninianus. Siscia. 

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

Estiot 2267, La Venera 1759; RIC 184 var (bust type)

With kind permission of Numismatik Lanz, Auction 2002