Crawford 206/2, Roman Republic, 150 BC., Rome mint, moneyer Safra, Æ As.

Roman Republic, moneyer Safra, Rome mint, ca. 150 BC.,
As (ø 29-31 mm / 24,68 g), bronze, axes irregular alignment ↑→ (ca. 90°),
Obv.: laureate head of Janus, value mark I above.
Rev.: SAFRA / ROMA , prow of galley right; dolphin downwards to right; above, SAFRA; below, ROMA.
Crawford 251, 206/2 (citing 27 specimens in Paris) ; Babelon Afrania 2 ; Sydenham 389 ; BMCRR Rome 675 .

the moneyer is a Safra, not otherwise known.