A 10th-century Coin
Obverse, in field: “no god but God, unique, He has no associate, Sword of the State, Abu’l-Hasan”; inner margin: “in the name of God this dinar was struck in Halab the year four and thirty and three hundred”; outer margin: “the command is God’s, past and future, and on that day the faithful will rejoice in the victory granted by God” (Q30:4)
Reverse, in field: “for God, Muhammad is the messenger of God, the blessings of God be upon him and his companions al-Mustakfi billah, Defender of the State, Abu-Muhammad, pure metal”; “Muhammad is the messenger of God who sent him with guidance and the religion of truth that he might make it supreme over all other religions, even though the polytheists may detest it.” (Q9:33)
An 11th-century Description
See the 11th-century description in a Christian Armenian source, which claims that the Hamdanids were terrified of the Buyid emir ‘Adud al-Dawla.