double dekadrachm of Syracusa, 304-289 BC

Obv. head Athena wearing Corinthian helmet
Rev. winged thunderbolt AGAQOKLEIOS/BASILEOS

5.65 g    Numismatica Ars Classica AG, Auction 13 8th October 1998 no. 513
          Ex Antikenmuseum Basel und Sammlung Ludwig no. 513


denominations suggested
double dekadrachm (100-litra)
stater            ( 80-litra)?