Nicely preserved pergamon cystophore.
The obverse is slightly off-centered, but fully legible.
Greece
Mysia, Pergamon, Cistophoric Tetradrachm circa 76-67 BC
Obverse: serpent emerging from cista mystica, the whole within wreath
Reverse: two serpents standing by decorated bow case, TH and monogram above, monogram of ΠΕΡΓ to left, staff of Asklepios to right
Diameter 27 mm, weight 12.37 g