Bisanthe was at the beginning of the 4th century under control of the Odrysian kings. Xenophon wrote of Seuthes II promising him Bisanthe as a marriage present, which was described as ” the very fairest of all the places I have upon the seacoast.” Later on, Seuthes reneged from the deal.
Later on, the name was changed to Rhadeston, though obviously that occurred after this coin was minted.
Bisanthe was originally a colony of Samos. The modern day city of Tekirdağ, Turkey sits on the site.