Kranion, Kephallenia, Peloponnesos. Circa 300 BC. AE 12mm (1.94 g). 

Crested helmet left
Large K. 

BMC 28; Laffaille 370 (this coin). 
Ex Maurice Laffaille Collection (Münzen und Medaillen Auktion 76, 19-20 September 1991), lot 370. 

Used with permission of CNG (cngcoins.com). Triton V, Lot: 385, January 2002.