Chersonesos, Thrace. Ca 386-338 BC. AR Hemidrachm, 13mm, 2.42 g. 

Forepart of lion right, head reverted.
Quadripartite incuse square with alternating raised and sunken quarters, A, dot and star in three of the quarters.

Berlin I, 22, type 2

Courtesy of Coins to Medals on vcoins.com, Oct. 2012.