Based on the reverse legend (reading from 12:00), TYPOY IEPASigma; KAI ASigma;YLambda;OY, I would say it is a silver tetradrachm (shekel of Tyre) from Phoenicia (in current day Lebanon), stuck about 100 BC. On the obverse is the laureate bust of Melqarth, wearing a lion's skin knotted at the neck. On the reverse is an eagle standing left on the beak of a ship. In the left field is a club and date monogram, and there is another monogram in the right field. Here is a similar coin http://www.vcoins.com/ancient/incit...Product=5947






















