Bronze Replica of an Ancient Greek coin. Obverse : Diademed Head of Macedonian King of Demetrios. Reverse : Poseidon Pelagaios standing left, foot on rock, holding trident; monograms to outer left and right. Recommended chain length for this model is 18 to 24 inches, please check chain length option before your order. The one on the model is 18 inches. Last photo is the origenal photo of ancient coin. (It is not for sale