Watch List notes:

Sicily. Syracuse. AE Onkia, 4th century BC. Obv. [ΣΥΡΑΚ]O. Head of Arethusa left; behind, dolphin. Rev. Ornate trident; to left, ΣΥΩΝ(?) and Δ. Unlisted in the standard references, cf. CNS II, 31 var. AE. 1.34 g. 11.50 mm. RR. Very rare.