eBay: HJB-Caracalla & River Gods, Rare Denarius 
Caracalla & River Gods, Rare Denarius 

198-217 AD, Rare Denarius, Rome, 207 AD, 2.97g. 
BM-555, C-441 (6 Fr.). Rx: PONTIF TR P X COS II 
Emperor standing l., head r., between two 
reclining river gods and seated captive.