The ancient city of Parion located in the north of Troad in the Ancient History, had been a city which sovereign powers in the region intended to own for centuries due its geographical and strategic position. This brought about the need for defending the city which therefore was tried to be protected with quite magnificent city walls of approximately 7,5 km long. Parion defence structures had been examined earlier with their existing ruins, however, no archaeological excavations were conducted until 2017 in defence structures. Scientific archaeological excavations were started in 2017 in order to discover the eastern face of the defense structure which can also be called an inner wall and environs the east of Parion Acropolis and its surrounding. The coins that are the subject matter of this study were retrieved at different elevations within the fire layer at 0.80 m. depth during the excavations in 2019. Three of the 39 coins found in the fire layer of a period of destruction in the city wall are Roman provincial coins while thirty six of them date back to the Early Byzantine Period. Among the Early Byzantine coins, the one bearing the latest date belonged to the year AD 615 and most of the coins were minted during the reign of Focas and Heraclius. Apart from the coins, archaeological remains and finds retrieved in the said fire layer as fully covered by traces of fire because of being exposed to highly intense flame signal a destruction in the city walls, thus, in the city. A sudden discontinuation of traces of destruction and coin finds draws attention in some ancient cities in Anatolia between the years AD 615-616 due to Sasanian attacks. Coins retrieved in Parion Acropolis Eastern (Inner) Wall fire layer are also important as they create an impression that Sasanians had stopped by Parion in AD 615-616 before they besieged Khalkedon and caused destruction in the city.