Danubian Eastern Celts, AR tetradrachm, ancient imitation, imitating Odessos mint of 280-200 BC. 

Head of Herakles right, wearing lionskin headdress. 
ILSILEWS VVEXLNDROY (sic) to right and left of Zeus seated 
left, right leg drawn back, holding eagle and sceptre. One 
leg of the chair resembling an E. Rudimentary monogram 
imitating ODH beneath the chair, KOI in exergue.

cf Marinescu 321 (this monogram and KOI in left field); Same 
dies as Gorny & Mosch auction 241, Lot 1365 described as 
Price 976 in error and Münzzentrum Rheinland auction 175, 
Lot 44, correctly attributed. Timeline Auctions int. no. 123569.