Mysia, Pergamon, circa 166-67 BC. AR Cistophoric Tetradrachm (27 mm, 12.3 g.). Circa 85-76 BC. Cista mystica with half-open lid from which a serpent issues to the left; around, ivy wreath with fruits. Rev. Two serpents coiled around a bow case; to left, ΠΕΡΓ the monogram of Pergamon. SNG von Aulock 7460; SNG Copenhagen 414. Very Fine. Rarer Variety only with monogram of the mint without magistrates monogram and without a symbol.