tetradrachm of Gela, 440-430 BC

Obv. quadriga, Nike above, in exergue GELOION retrograde
Rev. protome river-god Gelas as man-headed bull, crowned by Sosipolis, SOSIPOLIS

Jenkins 371   17.21 g    Numismatica Ars Classica AG, Auction 13 8th October 1998 no. 285
                         Ex Antikenmuseum Basel und Sammlung Ludwig no. 285

1st specimen
2nd specimen

Sosipolis (=saviour of the city) could be the name of the nymph