Coin of Tyre under Julia Maesa

Obv.: Bust of Julia Maesa, r., draped and wearing stephane. Rev.: Representation of Dido building the walls of Carthage: she stands facing before the gate of the city, holding scepter and rule; at left, a mason works on the top of the gate; beneath, a man digs to r.; in center field, a murex shell; at r., a palm tree?