MYSIA, Pergamon, c. 166-67 BC, AR Cistophoric Tetradrachm, struck c. 104-98 BCE. 12.30g, 28mm.
Obv: Cista mystica within ivy wreath
Rev: Two serpents entwined around bow and bowcase; KA above, city monogram to left, serpent-entwined thyrsos to right.
Kleiner, Hoard 15; SNG France 1720.
From the Tiberius Collection.
Worn obverse die but very nice reverse.