AE Sestertius, Rome, after 141 AD. 

Obv. DIVA FAVSTINA, draped bust right. 
Rev. AVGV-STA. Cybele, wearing polos, seated left, holding drum in
right hand and branch in left arm. SC in exergue.

RIC III 1123, Cohen 126, rated Rare.

Courtesy of harlanberk.com and monetaromana on Forvm Ancient Coins, Jan. 2011.