MYSIA, Pergamum. 133-67 BC. AR Cistophoric Tetradrachm (12.56 gm; 25 mm). NGC-Choice AU. (Strike 5/5; Surface 3/5). Certificate # 4374469-026. Struck circa 92-88 BC. Cista mystica with serpent; all within ivy wreath / Bow-case with serpents; monogram above and on left fieldf, thyrsos right. Kleiner, Pergamum 17; Pinder 98.