Watch List notes:

Rostrum tridens series. AE Semis, c. 206-195 BC. D/ Laureate head of Saturn right; behind, [S]. R/ Prow right; above, rostrum tridens left; before, S; below, ROMA. Cr. 114/3. AE. g. 8.68 mm. 21.50 RR. A very rare variety (rostrum tridens left), in excellent condition for issue. Deep olive green patina. Good VF.

A very light example: unofficial issue.