Cyrene, Cyrenaica, AR hemidrachm, Attic standard. 495-475 BC, 2.90 g. 

Silphium fruit. 
Silphium fruit, three dots above, three dots below.

BMC 35 type; Babelon Traité II-1, 1995-1996 var (two dots); Müller NAA 32 type (no dots mentioned.

Very rare. 

With permission of Numismatica Ars Classica - Auction 84, Lot 751, May 2015.