INDO-PARTHIANS. Tanlis Mardates. Mid-late 1st Century BC. AR Drachm (3.60 gm; 21 mm). Aria or Margiana mint. Circular "countermark" of helmeted king right / Archer (Arsakes I) seated right on throne, holding bow. Not in Sunrise. Well struck on anice broad flan. Choice VF. Lightly toned.