Roman Republic, Anonymous, Rome mint, after 211 BC.,
Æ As (32-34 mm / 43,54 g),
Obv.: laureate head of Janus, value mark I above.
Rev.: prow of galley right; value mark I above, ROMA below.
Crawford 56/2 ; Sydenham 143 ; Kestner 508-592 ; BMCRR Rome 217-228 .
a heavy and thick flan