Watch List notes:

CALABRIA. Tarentum. Circa 280-228 BC. Diobol (Silver, 12 mm, 0.91 g, 5 h). Head of Herakles wearing lion skin headdress to right. Rev. Athena Promachos moving to left, holding shield on her outstretched left arm and preparing to hurl a spear from her upraised right; in field to left, monogram of ΕΠΙΡΚ. HN III 1071. Vlasto 1359. Very rare. An unusually attractive and splendid coin. Reverse very slightly double struck, otherwise, extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, ex Numismatica Ars Classica 8, 3 April 1995, 44.