Parthian Kingdom. Mithradates II, c. 123-91 BC. AR Tetradrachm (15.68 g), Seleucia on the Tigris mint, struck c. 119-109 BC. Diademed bust left of Mithradates II. Reverse: Archer seated right on omphalos; behind, monogram; upright palm to right of legend. Sellwood 24.5; Shore 68;