Mysia, Pergamon AR Cistophoric Tetradrachm. (25mm, 12.50 g) Circa 180-133 BC. Cista mystica from which emerges serpent, all within ivy-wreath / Two serpents entwined around bowcase; KP monogram and ΓPY monogram above, serpent-entwined staff of Asclepios to right, TPE monogram to left.