Augustus. (27 BC-14 AD). Silver cistophoric tetradrachm, 12.08 g. Pergamum, 19-18 BC. 

IMP XI TR PO V, bare head right 
S P R SIGNIS RECEPTIS, triumphal arch inscribed IMP XI TR PO 
V, decorated with legionary eagles left and right and surmounted by emperor in quadriga right. 

RPC 2218. BMCRE 703. CBN 982. RIC 510. Cohen 298 . Sutherland 478a. 

With permission of Numismatica Ars Classica - Auction 46, Lot 478, April 2008.