Lucania, Thurium.
Nomos circa 443-400, AR 21 mm, 7.88 g. Head of Athena r., wearing Attic helmet decorated with a wreath. Rev. [Θ]OYPIΩN Bull advancing r.; in exergue, fish r. SNG Ashmolean 906 (these dies). Historia Numorum Italy 1775.
Light iridescent tone, surface somewhat porous, otherwise about extremely fine