identification

[democratic]

I have a (Greek ?) coin about the size of a us dime, one side 2 faces upside down  of each and the other side a large bird holding a fish. It looks like silver.

[Mohawk]

You'll have to post photos for us to tell you anything.  It's impossible to properly identify a coin with just a written description.

[Just Bob]

Try this page:

Ancient Coinage of Istros, Thrace