Kyzikos Electrum Hekte, 480-470 BC. 2.62 g. 

Triton facing half-left on tunny fish.
Quadripartite incuse square. 

Von Fritze 126; Traité I, 274.

Sold by Dix Noonan Webb Ltd, sale A10, lot 1016. June 2011.
Ex Bank Leu Auktion 48, lot 216, May 1989.