I acquired this coin at a garage sale a few years ago. The obverse has a high relief profile of a man in a turban with writing around the outside of the coin I could not possibly hope to decipher. The reverse says Istanbul Fetih Cemiyeti. It this a Turkish coin and does anyone have a rough idea of the value? I plan to keep it in collection, but would still like to have some idea of the value. Any help is appreciated.