Thracian Chersonese AR hemidrachm 480-350 BC. 2.18 g. 

Forepart of lion, head reverted. 
Quadripartite incuse square, with dot X in one quarter, amphora in the opposite quarter.

Sear SG 1606; BMC 48.

With permission of cngcoins.com, auction 249, Lot 36, Feb 2011