Istros, Thrace, AR Drachm, 18mm, 5.60 g. Late 5th-4th century BC. 

Facing male heads, the right inverted.
ISTRIH, sea-eagle left on dolphin, K under eagle's wing, T 
beneath dolphin.

SNG Tuebingen 816, otherwise unpublished.

With permission of cngcoins.com. Jan 2015