Watch List notes:

MYSIA. Kyzikos. Circa 600-550 BC. Tetartemorion (Silver, 6.5 mm, 0.21 g). Tunny's head with open mouth to left; below, fish swimming left. Rev. Quadripartite incuse square. SNG Paris -. SNG von Aulock 7326 (this coin). Von Fritze II -. Very rare. Sharp and attractively toned. About extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, and from the collections of L. Mildenberg and H.S von Aulock.