The 7th century BC was the first time Greeks have entered the Adriatic. A lot of different reasons motivated Greeks to make foundations of the colonies in this area. Historical sources and archeological surveys give us information and details about those settlements and about the colonial living. One of the sources is Periplus, travel record written by Pseudo Scylax, the unknown authorwho lived in the 4th century BC. In 25 chapters long record he describes his Mediterranean journey.The last 5 chapters tell us about the east Adriatic coast and the 22nd one mentions Herakleia, the Greek city with harbour. The only material record that shows us this colony existed on the Adriatic coast is themoney that was in the use back then. Results of the surveys done on this matter show us that cointhey used lasted through the 4th century BC. The bronze herakleian money with the display of theGreek hero Heracles with his main attributes and legend HPA, HPAK, HPAKA ili HPAKAE wasdivided in 3 nominal values that belong to Syracuse bronze system. Appearance of the IONIOS andDI re-mints at the end of 4th century BC tells us that was the time when Herakleia mint stopped with itswork. We could not say with definitively why the colony and its mint disappeared, but most likelyappearance of the pirates and Ardidaei after the death of Dionisyus of Syracuse and the weakeningof his country are the reason. A lot of theories on the colony location exist but it is still an open andunclarified question.