Urban bronze coins of small denomination from the Propontis area with images of a conical vessel with two handles, dynastic symbol of the coinage of the early Odrysian kings of the 5th-4th centuries B : C. Genealogy of the Odrysian Dynasty from the end of the 6th to the 3rd quarter of 4th century B.C. Catalogue of early Thracian tribal coins of 6th-5th century B.C., anepigraphic types of coins minted on the territory of the early Odrysian kingdom and early Odrysian regal coins of 5th-4th century B.C. - Topalov, Stavri (2005)