Hello, total newbie here. (I'm a member of CGC and have had Trading Cards Graded, but totally new to NGC).
I have a few coins that I acquired in 1990 near a dig site in Kusadasi, Turkey. I was at the ancient city of Ephesus where I obtained the following coin. It seems to be fairly heavy -- so I'm thinking it's mostly silver. Two questions, any idea what this coin is and about how old? Secondly, would this be worth sending to NGC for grading purposes? I apologize in advance if this is not the appropriate place to ask this type of question.