Circa 150-140 BC. AR Cistophoric Tetradrachm (12.15 gm, 27mm). Cista mystica with serpent; all within ivy wreath / Bow-case ornamented with aphlaston between two coiled serpents, their tails intertwined, ΠΕΡ monogram to left, filleted thyrsos to right. Kleiner and Noe Series 24a; SNG BN 1707; SNG von Aulock 1366. VF. Schulman Auc. 1964, lot 796.