KINGS OF PARTHIA. Vologases IV, circa 147-191. Dichalkon (bronze, 3.41 g, 17 mm), Seleukeia on the Tigris, SE 475 = 163/4. Diademed bust of Vologases IV to left, wearing tiara; to left, [EOY]. Rev. Draped and turreted bust of Tyche to right. Sellwood 84.144. Shore 632. Very fine.