The emporion sustained intensive relations with the main economic centers in Aegean Thrace, including Thasos, Maroneia, and Apollonia, and flourished in the 4th century BC.
In addition to the site's proximity to lumber sources and copper, iron, and gold mines, it was situated on the Hebros River, which was navigable for small boats, and was at the intersection of several major roads.
The oath taken in Dionysos’ name by King Cotys I and his successor, according to the Vetren inscription (see below), represents additional proof for the significance of that cult in the official ideology of the Odrysian state.
Under Cotys I (384 BC–359 BC) and his successors, the Thasian, Apollonian, and Maroneian traders of the city obtained guarantees, as described in the Vetren inscription (see below), concerning the integrity of their life, property and activity.
The collection also contains coins from several Greek city-states, including Thasos, Maroneia, Parion, Thracian Chersonese, Kypsela, Enos, Apollonia, Messembria, Damastion, Sermyle, and Kardia.
Also included in the find is coinage of Ancient Macedonian and Hellenistic rulers (Philip II, Alexander the Great, Cassandros, Demetrios Poliorketes, Lysimachos, Seleucus I, etc.).
In 1999 another fundamental discovery was made – a collective find consisting of 552 silver and gold coins issued by Alexander the Great, Demetrios Poliorketes, Lysimachos and Seleucus I.
Represented in more variety are black glazed pottery wares, including scyphoi, kanthaoroi, bowls and one-handled cups, kylices and various shapes of latter type, lekythoi, and fish plates.
Emporion Pistiros, which was created under the tutelage of the Thracian kings, became a key center in the export of metals from Thrace to Greece.
After the Celts burned down the emporion in the early 3rd century BC, a village was built on its remains, in which fibulae and other ornaments made of iron, bronze, silver and gold were manufactured.
Archaeologists are working to understand how it was possible to found a strongly fortified Greek city so far inland, even if the settlement was apparently accessible for small boats on the Hebrus River.
No palace, or any other archaeological evidence for significant social hierarchy, has been uncovered at Pistiros, in contrast to other Thracian sites such as Seuthopolis, and M. Domardzki changed his mind soon after the inscription was found.
The program is run by the Balkan Heritage Foundation with the cooperation of the Septemvri Archaeological Museum "Prof. Mieczyslaw Domaradzki," and the New Bulgarian University.