Pinaria Nattia AE as.

NAT, AE as, (22.97g) c. 155 BC, Rome Mint, Laureate head of Janus
right, I above. 
Prow right, NAT above, I before, ROMA in exergue. 
C200/2: Pinaria 3.

With kind permission of Numismatica Ars Classica.