The only regularly issued silver coin was the Hexagram first issued by Heraclius in 615 which lasted until the end of the 7th century, minted in varying fineness with a weight generally between 7.5 and 8.5 grams. It was succeeded by the initially ceremonial "miliaresion" established by Leo III the Isaurian in ca. 720, which became standard issue from ca. 830 on and until the late 11th century, when it was discontinued after being severely debased. Small transactions were conducted with bronze coinage throughout this period.