If that is an authentic coin, then it is an unusual one. I don't think I have seen that portrait style before. It almost looks like a Roman Republican style portrait? Someone else may know.
That's Athena Nikephoros on the reverse. The diadem on the portrait is similar to what you'd see on Seleukid or Cappadocian coins, but the portrait isn't familiar. I agree with Jay that it looks cast (casting bubbles). I would bet on a modern fake/fantasy.
I am starting to agree that it is a modern fantasy based on the obverse portrait. The reverse looks like a later Roman style which does not go with the portrait style which looks Greek or Republican.
According to my Dad, this coin was found on a salt water beach in Connecticut with a metal detector about 30 years ago. Don't know if that helps or hurts.
..good find, but i doubt it's a authentic Greek coin.. i think i see a seam on the edge...and Greeks weren't visiting much in Conn. back in the day .. but hey, finding any coin is a good thing
I agree that the Greeks did not visit Conn. However, I do not believe they would have been the ones that lost it. I looked at the coin with my loop and could find no seam. Does anyone know who the person is on the front of the coin? If it is not real I was thinking that perhaps it was on a bracelet or necklace. Right now it is giving me something to do on this cold Wisconsin day (-11F, WC -23F). Thank you for your help and Happy New Year!
It's highly, highly doubtful that this coin is authentic. There is such an extensive depth and breadth of expertise on this site that, if the OP coin were remotely authentic, someone here would have recognized it and at least partially identified it. The fact that this has not happened makes it 99.9% likely that this coin is not authentic. Plus, nobody's going to accidentally lose an ancient coin on a beach in Connecticut.