Sicily, Syracuse AR Obol.  mm, 0.7 g. Deinomenid Tyranny. 
Time of Hieron I, ca 478–470 BC. 

Head of Arethusa right, wearing pearl taenia
Wheel with four spokes. 

Boehringer Series XI, 279-85; Hoover HGC 1371; Sear SG 930.

With permission of cngcoins.com, auction 357, lot 26 (Aug. 2015)