Watch List notes:

Mysia, Pergamon AR Cistophoric Tetradrachm. Circa 133-67 BC. Serpent emerging from cista mystica; the whole within wreath / Two serpents entwined around bow and bowcase; civic monogram in left field, BO above, serpent-entwined thyrsos to right. Kleiner, Hoard 10; SNG BnF 1718. 12.50g, 27mm, 12h.

Good Very Fine.

From the inventory of a Swiss dealer;
Ex Roma Numismatics Ltd., E-Sale 62, 17 October 2019, lot 340.