Roman Republic, anonymous anchor series, Rome mint, ca. 169-158 BC.,
Æ As (29-33 mm / 23,48 g), based on an As of about 27 g.,
Obv.: laureate head of Janus, [value mark I above].
Rev.: prow of galley right; I (mark of value) above, anchor to right; below, [ROMA].
Crawford 194/1 (citing 13 specimens in Paris) ; Syd. 538 ; BMC Rome 517 ; BMC Italy 298 .