Roman Republic, PAE series (moneyer Paetus ?), Rome mint, ca. 169-158 BC.,
Æ As (31-33 mm / 22,89 g), uncial standard, based on an As of about 31,5 g.,
Obv.: laureate head of Janus, value mark I above.
Rev.: prow of galley right; I (mark of value) to right, above, {PÆ} -monogram; below, ROM[A].
Crawford 173/1 (citing 13 specimens in Paris) ; Syd. 358 ; BMC 635 ; Babelon Aemilia 1 .