Thracian Chersonese AR half drachm Thracian Chersonese
480-350 BC. Silver half drachm, 2.20 g. 

Obv.: Forepart of lion, head reverted. 
dot over AG monogram in one section, dot in another. 

(additional references added:)
SNG Cop 826; McClean 4060; SNG von Post 76; Berlin I 25.

Used with permission of CNG coins, www.cngcoins.com, Feb, 2008