Watch List notes:

SICILY. Katane. Circa 455-450 BC. Tetras (Silver, 8 mm, 0.24 g, 7 h). Head of Silenos to left, bearded, with an animal ear, and with his bald head covered by an ivy wreath. Rev. Κ - Α Kithara; around, three pellets. Boehringer, Kataneische Probleme, Ts1 (this coin). Buceti 23. Very rare. A marvellous coin of superb style, amazingly so for such a small denomination. Extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions and from the collection of Leo Mildenberg, who acquired it from R. Russo.