Watch List notes:

Sicily, Dionysios I (405-367), Hemilitron, Syracuse, c. 400 BC; AE (g 5,35; mm 17; h 2); ΣYPA, head of Athena l., wearing Corinthian helmet, Rv. Hippocamp l. CNS II, n. 34; SNG Copenhagen 721; SNG ANS 426-433.
Very fine.