Silver stater with a turtle

The silver stater with a Turtle is a coin from the 6th century BC Greece. The front has a sea turtle design, while the back has a punch mark, found on most coins at that time. The earliest coins were made of electrum, a mix of gold and silver. The coins were first made in the island of Aegina off the south east side of Greece. Some historical sources say the first coins were made by the king off Argos, Pheidon. The coins with 'turtle' design are considered "an important early trading currency".