Crawford 160/1, Roman Republic, 179-170 BC., Rome mint, anonymous dolphin series, Æ As.

Roman Republic, anonymous dolphin series, Rome mint, ca. 179-170 BC.,
Æ As (29-32 mm / 24,20 g), uncial standard, based on an As of about 31,5 g.,
Obv.: laureate head of Janus, value mark I above; ca. 7 ancient cuts on obverse.
Rev.: prow of galley right; I (mark of value) to right, dolphin above; below, [R]OMA.
Crawford 160/1 (citing 7 specimens in Paris) ; Syd. - ; BMC 427 .