Watch List notes:

MYSIA. Kyzikos. Circa 450-400 BC. Trihemiobol (Silver, 10 mm, 1.15 g, 2 h). Protome of a lion with open jaws to left, and with both forelegs visible; behind, tunny fish swimming downwards. Rev. Ram's head to left; all within incuse square. Asia Minor Coins 9227 (this coin). SNG von Aulock-. Traité -. Von Fritze II, 18 and pl. V, 21. Extremely rare. Sharply struck and beautifully toned. Minor flatness and die break on the reverse, otherwise, extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, ex Leu Numismatics 81, 16 May 2001, 247.