KINGS of PARTHIA. Vologases IV. Circa AD 147-191. BI Tetradrachm (26mm, 13.06 g, 12h). Seleukeia on the Tigris mint. Dated Audynaios 490 SE (December AD 178). Diademed bust left, wearing tiara; B to right / Vologases seated left, receiving wreath from Tyche standing right, holding scepter; year above; month in exergue. Sellwood 84.61-9 var. (month); Sunrise –; Shore 429 var. (year). In NGC encapsulation graded Ch VF, Strike: 4/5; Surface: 3/5. Toned.