Tacitus, AV light Aureus, Rome. 

IMP CM CL TACITVS P AVG, laureate, draped and cuirassed 
bust right 
ROMAE AETERNAE, Roma seated left on shield, holding plain 
globe and sceptre. 

RIC 74 var (obv. legend); Calico 4111; Sear 11758 var (obv. legend). 

With kind permission of Numismatik Leu, Auction 93.