Ionia, uncertain city. ca 600-550 BC. EL Hekte, (sixth Stater), 11mm, 2.62 g. Phokaic standard.

Lion sitting right, tail curled upwards over its back.
Quadripartite incuse square. 

SNG von Aulock 1776; SNG Lockett 2784 = Pozzi 2468 (same dies); Gulbenkian 724. 
Extremely rare.

With permission of cngcoins.com, Triton XVIII, lot 644. 
Sold for $5,000.