Istros, Thrace. AR Drachm 18mm, 5.69 g. 

Facing male heads, the right inverted.
ISTRIH, Sea-eagle left on dolphin, DI beneath dolphin.

AMNG 440; Moscow Univ. Cat. 94; Canarache 343

With permission of Auktionshaus H. D. Rauch GmbH - Auction 94, Lot 207, April 2014.