Watch List notes:

SICILY. Katane. Circa 430-415/3 BC. Litra (Silver, 11.5 mm, 0.75 g, 4 h). Head of Silenos to left, with animal ear and with his balding head covered by an ivy wreath. Rev. ΚΑΤΑ - ΝΑΙΩΝ Winged thunderbolt between two round shields. Boehringer, Kataneische Probleme, Li 6. SNG ANS 1266-1267. Sharp and remarkably attractive with a head of Silenos in a particularly refined, ripe Classical style. Glossy, dark patina as found. Extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, acquired from Spink's for £550.