Your coin is similar to those of Heraclius 610-641 AD (in the center) with his sons, Heraclius Constantine, on his right and his other son, Heraclonas on his left. Heraclius is shown with a long beard and moustache, while his two sons are beardless. The pics shown do not reveal the crowns. Heraclius and his elder son would be crowned, but Heraclonas would be uncrowned and wearing a plain cap.
If it is a Heraclius coin, there are (from my count) about 20+ variations. Without first verification of its specific identity, authenticity and variation, citing a value would be premature.
Don......
PS: Welcome to Treasure Net !!