Apollonia Pontica [Sozopol]

Apollonia Pontica was a Greek apoikia on the Bulgarian part of the Black Sea  founded in the end of the VIIth century BC by Ionian colonists.

See:

1. Kristiyan Nedyalkov,  Local pottery from Apollonia Pontica 6th – 5th century, Archaeologia Bulgarica XII.1, 2008, pp. 1-28 - http://www.archaeologia-bulgarica.com/archaeologia-bulgarica-journal/