Sicily.   Syracuse.   Hieron I (478-466 BC).     AR Obol, c. 475-470 BC.   Obv.    Diademed head of Arethusa right.        Rev.   Wheel with four spokes.     HGC 2 1371; SNG Cop. 632.     0.64 g.   10.00 mm.        Choice example, struck on a broad flan, with lovely old cabinet tone.    Good EF.