MYSIA, Pergamon. Circa 166-67 BC. AR Tetradrachm (26mm, 12.60 g, 11h). Cistophoric standard. Struck circa 95-92 BC. Cista mystica with serpent; all within ivy wreath / Bow case with serpents; BO above, civic monogram to left, serpent-entwined staff to right. Kleiner, Hoard 10; SNG BN 1718. Obverse struck slightly off center with worn die. VF.