Eryx, Sicily, AE Litra. ca. 339-310 BC; 0.65 g. 

Youthful head of Herakles right, wearing lionskin headdress,
astagalos behind head.
GELWIWN, bearded and horned head of the river-god Gelas
left, wreathed with reeds.

Jenkins 541 and 543.
Rare

With permission of Münzen & Medaillen, List 399, 1978.