tetradrachm of Syracuse, 405 BC ca.

Obv. galloping quadriga driven by winged young god (Eros). Nike flying above, crowning the charioteer, in ex: dolphin, Scylla, fish
Rev. head of goddess (Persephone/Demeter), four dolphins around, SURAKOSIWN

Tudeer 46w (V15/R28)    17.28 g    Numismatica Ars Classica AG, Auction 13 October 1998 no. 460
                                   Ex Antikenmuseum Basel und Sammlung Ludwig no. 460
                                   ex Pennisi Collection

obverse signed by Euth... (obverse in ex:                   EYQ) 
reverse signed by Eumenos (reverse beneath neck truncation: EVM)    
According to Tudeer, EYQ: "Double signed by Eumenes and Phrygillos"    

1st specimen
2nd specimen 

See die-coupling (Tudeer1-57) and hairstyle E