KINGS OF PARTHIA. Vologases IV, circa 147-191. Tetrachalkon (Bronze, 20 mm, 8.32 g, 8 h), Edessa. Diademed and draped bust of Vologases IV to left, wearing tiara; to right, B. Rev. Large symbol. Sellwood 84.134. Shore 436. Sunrise -. Some deposits, otherwise, very fine.