welcome to ancients! they are awesome...and kind of a pain as you see. i hope your coin is real, i would think it is but am not good at spotting less than obvious fakes (i wouldn't guess most of those on DS link were fakes). i don't have much greek silver, i usually get spooked when i'm shopping for the stuff. i always check the forum fake coin reports and run it by some of the folks here before i shell out more than bargain bin cash for a coin..unless i know the type pretty well.
I have now bought my 2nd ancient! This time, I got an NGC graded one. I spent about 10 times as much too, yikes! I will post pics when it arrives...