Selinos, Sicily. AR Litra, 0.68g; 13mm, 420-410 BC. 

Obv: Nymph seated left on rock, grasping large serpent with her extended right hand.
Rev: SELINOUS, Man-headed bull standing right, barley corn below

SNG Lloyd 1271; SNG ANS 711; cf Sear Greek 909. 

With permission of Roma Numismatics, January, 2010