Roman Republic, anonymous AE As. 169-158 BC. 29 g. 

Laureate head of Janus, I above.
Prow right, I above, anchor to right, ROMA below. 

Crawford 194/1; Syd. 238; Sear 688. 

With permission of Gerhard Hirsch Nachfolger Auction 296, Lot 1997, Feb. 2014.