Barce, Cyrenaica, AR hemidrachm, 460-450 BC, 14 mm, 1.70 g. 

Silphium plant.
B-A-R-K clockwise in the four corners of head of Zeus Ammon 
right in square dotted border, all within a circular incuse. 

BMC 18; Mueller 290B, Sear Greece 6385. 

With permission of cgb.fr, June 2013.
Estimate : 750.00 Euro