The Greek Coin Pendant in Silver from Tom Wood, Norway. 

Details
The Coin Pendant is a cast from an authentic ancient Greek coin used in Afghanistan thousands of years ago. The coin is of Alexander the Great, the king of the ancient Greek kingdom of Macedon, and has an oxidized finish.

The necklace is made with 925 sterling silver in a polished finish, plated with white rhodium to strengthen the surface and prevent tarnishing.