BITHYNIA. Kios (as Prusias ad Mare). Orsobaris Musa, daughter of Mithradates VI Eupator, circa mid to late 1st century BC. Tetrachalkon (Bronze, 22 mm, 6.60 g, 12 h), circa 30-22 BC (?). [BAΣIΛIΣΣHΣ] - OPΣOB[APIOΣ / MOYΣHΣ] Diademed head of Orsobaris Musa to left. Rev. ΠPOYΣIEΩN [TΩN / ΠPOΣ ΘAΛAΣΣHI] Bearded head of Herakles to left. RPC I 2020. Extremely rare and very interesting. Somewhat corroded, otherwise, fine.

For a longer note on this very interesting issue, see the note in Leu 1, 25 October 2017, 74