Hello, I own a coin that I can not identify with accuracy. - Metal :Silver - Diameter : 15.5mm - Weight 2.53g. At first, I supposed that it was a Celtic coin. But after research, I didn't find anything similar. So, This coin could be a greek imitation ? As I see 2 dolphins on the obverse on the right side of the head, I assume that the coin was minted by people living near the sea or the ocean .. The graphism on both sides is too fine for a Celtic coin and not enough fine for a greek coin. Thank you in advance for your help.