Kleonai, Argolis. AR Twelfth-stater, ca. 490-470 BC. 1.11 g.

Forepart of lion right, with open jaws and extended paw.
Crestless Corinthian helmet right within incuse square. 

BCD Pelop. 1313. 
Extremely rare.

With permission of cngcoins.com, auction Triton XIII, Lot 160, Jan 2010.
Ex BCD Collection.