Istros, Thrace, AE19. 3rd - 2nd c. BC. Magistrate Aut.., 3.16 g.

Veiled and wreathed head of Demeter right, countermark veiled head of Demeter right.
ISTRI, sea-eagle on dolphin left, laurel branch in left field, AYT monogram below. 

SNG Stancomb 210 (this coin). 

With permission of Roma Numismatics E-Sale 74, Lot 46, Aug 2020.