This coin is an ancient Greek silver AR stater from the city of Poseidonia/Paestum in Lucania, minted between 480-400 BC. It is considered extremely rare and is in EF (extremely fine) condition. The coin is uncertified and depicts the image of a bull on one side and the goddess Athena on the other. 19mm, 7.7 grams silver. It is a very solid, thick silver coin.